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Preprint REVIEW | doi:10.20944/preprints201610.0095.v1

Comparison of Aerodynamics Characteristics of NACA 0015 & NACA 4415

Robiul Islam Rubel, Md. K. Uddin, Md. Zahidul Islam, Md. Rokunuzzaman

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: aerofoil; CFD; lift and drag force; pressure and velocity contour

Online: 22 October 2016 (11:08:56 CEST)

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Preprint REVIEW | doi:10.20944/preprints201810.0061.v1

Generation and Applications of Plasma (An Academic Review)

Faizan Mehmood, Tariq Kamal, Umair Ashraf

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Plasma Generation Techniques, Applications of Plasma; Fusion technology; Plasma ion implantation and Deposition.

Online: 3 October 2018 (15:54:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0296.v1

Solving Prandtl-Blasius boundary layer equation using Maple

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Prandtl boundary layer; Prandtl-Blasius equation; numerical solution; Runge-Kutta method; Maple

Online: 13 August 2020 (08:32:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0296.v2

Solving Prandtl-Blasius Boundary Layer Equation Using Maple

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Prandtl boundary layer; Prandtl-Blasius equation; numerical solution; Runge-Kutta method; Maple

Online: 5 September 2020 (09:33:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0027.v1

On the Design of Bubble Columns Equipped with a Fine Pore Sparger: Effect of Gas Properties

Athanasios G. Kanaris, Theodosios I. Pavlidis, Ariadni P. Chatzidafni, Aikaterini A. Mouza

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: bubble column; porous sparger; holdup; bubble size; transition point; CFD

Online: 5 February 2018 (03:45:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints201704.0019.v1

Influence of Plasma Treatment to the Performance of Amorphous IGZO based Flexible Thin Film Transistors

Long-long Chen, Xiang Sun, Ji-feng Shi, Xi-feng Li, Xing-wei Ding, Jian-Hua Zhang

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: TFTs; IGZO; flexible; plasma treatment

Online: 4 April 2017 (09:44:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0067.v2

Streamline's Shape Theory

Yuvaraj George

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: general fluid mechanics; mathematical model; streamline; flow–structure interactions; topological fluid dynamics

Online: 16 April 2019 (11:10:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0038.v1

On the Reynolds-Averaged Navier-Stokes Equations

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulence; the Reynolds stress tensor; turbulence closure problem

Online: 2 July 2019 (09:53:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0033.v1

Analytical Solution of Tank Drainage for Electrically Conducting Power Law Fluid

Saeed Islam, Kamran Nazir Memon, Abdul Majeed Siddiqui, Syed Feroz Shah

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Tank drainage; Power law MHD fluid; Analytical solution

Online: 5 February 2018 (11:41:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202004.0152.v1

Hydrodynamic Cavitation-based Rapid Expansion of Hesperidin-rich Products from Waste Citrus Peel as a Potential Tool Against COVID-19

Francesco Meneguzzo, Rosaria Ciriminna, Federica Zabini, Mario Pagliaro

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: citrus fruits; coronavirus; COVID-19; flavonoids; hesperetin; hesperidin; hydrodynamic cavitation; pectin; SARS-CoV-2.

Online: 9 April 2020 (12:47:09 CEST)

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Preprint REVIEW | doi:10.20944/preprints201901.0152.v1

Moses Effect (Deformation of Diamagnetic Liquid/Vapor Interface by Magnetic Field): Physics and Applications

Edward Bormashenko

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: diamagnetic liquid surface; magnetic field; Moses Effect; interfacial tension; shape of the near-surface dip

Online: 15 January 2019 (11:42:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints201703.0059.v1

Fluid Flow and Mixing Induced by AC Continuous Electrowetting of Liquid Metal Droplet

Qingming Hu, Yukun Ren, Weiyu Liu, Xiaoming Chen, Ye Tao, Hongyuan Jiang

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Mixer; Marangoni chaotic advection; continuous electrowetting; liquid metal droplet

Online: 13 March 2017 (07:58:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0114.v1

Thermoplastic Micromodel Investigation of Two-Phase Flows in a Fractured Porous Medium

Shao-Yiu Hsu, Zhong-Yao Zhang, Chia-Wen Tsao

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: thermoplastic; micromodel; cyclic olefin copolymer; UV/Ozone bonding; residual trapping; flow visualization

Online: 25 January 2017 (11:31:41 CET)

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Preprint ARTICLE | doi:10.20944/preprints201703.0015.v1

Evolutionary Optimization of Colebrook’s Turbulent Flow Friction Approximations

Dejan Brkić, Žarko Ćojbašić

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: colebrook equation; colebrook-white; moody diagram; turbulent flow; hydraulic resistance; darcy friction; pipes; genetic algorithms; optimization techniques; error analysis

Online: 2 March 2017 (07:57:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints201704.0116.v1

Forces Acting on Objects in Nanopores with Irregularities - Irregular Nanopores as Shape Sensors

Mohammad Tajparast, Mladen I. Glavinovic

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Irregular nanopore; Poisson-Nernst-Planck; Navier-Stokes; Maxwell stress tensor;

Online: 18 April 2017 (17:50:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0061.v2

Stress Energy Tensor Study in Fluid Mechanics

Roman Baudrimont

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Fluid Mechanic, Pulse Energy Tensor, General Relativity

Online: 17 June 2019 (09:35:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0030.v4

Correct Expression of the Material Derivative in Continuum Physics

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: material derivative; continuum physics; solution existence condition; the Navier-Stokes equation

Online: 15 June 2020 (09:55:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201710.0147.v1

Study on the Best Water Cushion Depth of Stilling Basin with Shallow-Water Cushion at Different Froude Numbers

Qiulin Li, Lianxia Li, Huasheng Liao, Jingjing Wei, Shengyin Jiang, Faxing Zhang

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: energy dissipation; hydraulic jump; Froude number; stilling basin with shallow-water cushion; large eddy simulation; hydraulic characteristics

Online: 23 October 2017 (08:30:57 CEST)

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The water cushion depth of stilling basin with shallow-water cushion is a key factor that affects the flow regime of hydraulic jump in the basin. However, the specific depth at which the water cushion is considered as “shallow” has not be stated clearly for now, and only conceptual description is provided. This paper attempts to specify the best water cushion depth based on the flow regime of hydraulic jump and underflow speed; namely, in case of critical hydraulic jump in the basin, the best water cushion depth is located where the minimum distance to the bottom plate of the stilling basin is 1/5~1/4 of the water cushion depth. The theoretical analysis indicates, at different inclinations of discharge chute (θ) and depth ratios of inlet (m), instead of monotonic change, the Froude number (Fr) at inlet of the stilling basin with shallow-water cushion firstly reduces and then increases as the flow velocity at discharge chute inlet (V) increases; the parameters of inflection point (critical flow velocity and critical Fr) increase as the inclinations of discharge chute (θ) and depth ratios of inlet (m) increase. Such regularity is the theoretical basis for selecting representative study cases. The reliability of the large eddy simulation calculation results are verified by a model test; in the paper, 30 cases including five different Froude numbers and six shallow-water cushion depths are selected, for calculating the hydraulic factors such as flow profile, flow regime and flow velocity in the stilling basin with shallow-water cushion; and the varying pattern between the best depth of stilling basin with shallow-water cushion (depth-to-length ratio) and the inflow Froude number is obtained which indicates that the best depth of stilling basin with shallow-water cushion varies little as the change of the Froude number before reaching the critical Froude number; however, the best depth-to-length ratio of stilling basin with shallow-water cushion increases as the Froude number increases after the critical Froude number is reached. The study results in this paper are of reference significance to design and calculation of the stilling basin with shallow-water cushion.

Preprint ARTICLE | doi:10.20944/preprints201910.0208.v1

Quinn’s Law of Fluid Dynamics Pressure-Driven Fluid Flow through Closed Conduits

Hubert M Quinn

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: permeability; porous media; fluid dynamics; fluid current; turbulence; simple harmonic motion

Online: 18 October 2019 (07:29:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0138.v1

Reynolds Turbulence Solution

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulence; number of unknowns; the Reynolds stress tensor; RANS; turbulence closure problem

Online: 12 August 2019 (05:39:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201709.0113.v1

The Cost of Clean Water in the Delaware River Basin (USA)

Gerald J. Kauffman

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: watershed; water quality; economics

Online: 23 September 2017 (11:05:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0376.v1

CONTINUITY AND MOTION (NAVIER-STOKES) EQUATIONS

Dmitriy Provorov

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: continuity equation, Navier-Stokes equation, Bernoulli equation, existence and smoothens of the solutions of Navier-Stokes equation

Online: 21 August 2018 (10:12:40 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints201810.0292.v1

Fluid Flow and Static Structural Analysis of E-Glass Fiber Reinforced Pipe Joints versus S-Glass Fiber Reinforced Pipe Joints

Sujith Bobba, Z. Leman, E.S. Zainudin, S.M. Sapuan

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: computational fluid dynamics; glass fiber reinforced composites; heavy crude oil; pressure waves

Online: 15 October 2018 (08:58:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201712.0027.v1

Refractive Index Sensor Based on Metal–Insulator–Metal Waveguide Coupled with Symmetric Structure

Shubin Yan, Meng Zhang, Xuefeng Zhao, Yanjun Zhang, Jicheng Wang, Wen Jin

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: surface plasmon polaritons; Fano resonance; finite element method; refractive index sensor

Online: 4 December 2017 (16:44:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0221.v1

Fully Kinetic Simulation of Ion-Temperature-Gradient Instability in Tokamaks

Youjun Hu, Matthew T. Miecnikowski, Yang Chen, Scott E. Parker

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: fully kinetic ions; ion temperature gradient instabilities; tokamak; gyrokinetics; particle-in-cell

Online: 27 March 2018 (06:03:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201705.0150.v1

A Speculative Model of Thermally Forced Quasi-Geostrophic Flow in an Unbounded Ocean

Fulvio Crisciani, Roberto Purini, Renzo Mosetti

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Geophysical Fluid Dynamics; Geostrophic flows; Thermal forcing; Analytical model

Online: 19 May 2017 (16:33:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0034.v1

Exact Solutions of Brinkman Type Fluid Between Side Walls Over an Inﬁnite Plate

Saeed Islam, Muhammad Asif, Samiul Haq

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Brinkman type ﬂuid; Fourier Integral transformation; side walls; oscillating shear stress

Online: 5 February 2018 (11:43:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints201709.0137.v1

Electrode Cooling Effect on Out-of-Phase Electrothermal Streaming in Rotating Electric Fields

Weiyu Liu, Yukun Ren, Ye Tao, Xiaoming Chen, Qisheng Wu

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: electrothermal flow; rotating electric field; out-of-phase smeared structural polarization; electrode cooling; external natural convection; co-field flow rotation

Online: 27 September 2017 (12:11:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201611.0083.v1

A Two-phase Model of Air Shock Wave Induced by Rock-fall in Closed Goaf

Fengyu Ren, Yang Liu, Jianli Cao, Rongxing He, Yuan Xu, Xi You, Yanjun Zhou

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: air shock wave; rock-fall; two-phase model; computational fluid dynamics (CFD)

Online: 16 November 2016 (13:06:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints201712.0065.v1

Effect of a Gurney Flap on the Performance of an Axial Fan

Chen Liu, Haijun Xie, Jun Xu, Chen Jian, Ren Dai

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Axial fan; Gurney flaps; wind tunnel testing; CFD investigation; pressure rise coefficient

Online: 11 December 2017 (14:47:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0259.v1

Diffusion Criteria of O₃ Gas Emitted From Non-Thermal Atmospheric-Pressure Biocompatible Plasma Sterilizer for Safety Environment

Jang Sick Park, Eun Ha Choi

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: non-thermal atmospheric-pressure biocompatible plasma; diffusion; ozone species; plasma sterilizer

Online: 18 February 2020 (06:47:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints201802.0128.v4

A Computational Analysis of Gas Jet Flow Effects on Liquid Aspiration in the Collison Nebulizer

James Q. Feng

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: collison nebulizer; compressible gas jet flow; liquid aspiration; pneumatic atomization

Online: 12 June 2018 (09:53:46 CEST)

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Preprint REVIEW | doi:10.20944/preprints201803.0135.v4

Mathematical Modeling of Rogue Waves: A Survey of Recent and Emerging Mathematical Methods and Solutions

Sergio Manzetti

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: rogue; wave; models; KdV; NLSE; non-local; ocean; optics

Online: 9 June 2018 (15:28:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0052.v1

Kinematics of a Fluid Ellipse in a Linear Flow

Jonathan M. Lilly

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: elliptical vortex; linear flow; Kida vortex; Stokes' theorem; Ball's theorem; moment of inertia; matrix basis

Online: 6 February 2018 (06:42:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints201901.0323.v1

Triple Langmuir Probe for Diagnosis of Plasma Produced by Dielectric Barrier Discharge of Parallel Plates in Atmospheric Pressure

Ivan Alves de Souza, João Freire de Medeiros Neto, Antônia Karla Paixão Silveira, Thércio Henrique de carvalho Costa, Efrain Pantaleon Matamoros, Michelle Cequeira Feitor, Rômulo Ribeiro Magalhães Sousa

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: optical emission spectroscopy; Lissajous figures; triple Langmuir probe

Online: 31 January 2019 (07:36:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints201807.0622.v2

On closure problem of incompressible turbulent flow

BOHUA SUN

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Turbulence, the Reynolds stress tensor, turbulence closure problem

Online: 24 September 2018 (13:03:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0290.v1

Convective Instability in a Hele Shaw Cell with the Effect of Through Flow and Magnetic Field

Dhananjay Yadav

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Linear stability theory; Magneto convection; Through flow; Hele-Shaw cell; Galarkin method.

Online: 17 September 2018 (09:09:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0324.v1

Time-Resolved Emission Spectroscopy of Atomic and Molecular Species in Laser-Induced Plasma

Christian Parigger, Ghaneshwar Gautam, Christopher M Helstern

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: laser-induced plasma; atomic and molecular spectroscopy; Abel inversion; hydrogen; cyanogen

Online: 18 July 2018 (09:31:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0030.v1

A Novel Simplification of the Reynolds-Chou-Navier-Stokes Turbulence Equations of Incompressible Flow

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulence; mean velocity; fluctuation velocity; the Reynolds stress tensor; vorticity; turbulence closure problem

Online: 3 July 2018 (08:39:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0420.v1

Experimental Study and Hydrodynamic Modelling of the Wet Agglomeration Process

Benjamin Oyegbile, Guven Akdogan, Mohsen Karimi

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: wet agglomeration; flocculation; hydrodynamics; turbulence

Online: 29 May 2018 (09:00:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201712.0113.v1

Design of a Novel μ-Mixer

Athanasios G. Kanaris, Aikaterini A. Mouza

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: mixing; CFD; microfluidics

Online: 18 December 2017 (06:54:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints201806.0461.v1

The Reynolds Navier-Stokes Turbulence Equations of Incompressible Flow Are Closed Rather Than Unclosed

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulence; the Reynolds stress tensor; turbulence closure problem

Online: 28 June 2018 (08:15:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0105.v1

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Turbulent boundary layers; laminar boundary layers; similarity transformation; similarity solution; Prandtl mixing length; Reynolds number

Online: 8 February 2022 (10:37:08 CET)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints201805.0124.v1

Simulation of Bell Correlations in Walker Systems

Marc Fleury

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: entanglement; hydrodynamic analogs of quantum systems; Bell's inequalities; Bohmian mechanics

Online: 8 May 2018 (08:43:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0128.v3

A Computational Analysis of Gas Jet Flow Effects on Liquid Aspiration in the Collison Nebulizer

James Q. Feng

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: collison nebulizer; compressible gas jet flow; liquid aspiration; pneumatic atomization

Online: 29 March 2018 (03:43:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0444.v1

Encapsulation of Droplets Using Cusp Formation Behind a Drop Rising in a Non-Newtonian Fluid

Raphael Poryles, Roberto Zenit

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: drop; cusp instability; encapsulation

Online: 30 May 2018 (09:08:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0078.v1

Numerical and Experimental Modelling of a Wave Energy Converter Pitching in Close Proximity to a Fixed Structure

Pilar Heras, Sarah Thomas, Morten Kramer, Jens Peter Kofoed

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: wave energy; numerical model; experiments; verification; pitching

Online: 9 January 2019 (07:18:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0049.v1

Tumbling-Snake Model for Polymeric Liquids Subjected to Biaxial Elongational Flows with a Focus on Planar Elongation

Pavlos S. Stephanou, Martin Kröger

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: polymer melt; stochastic differential equation; link tension coefficient; entanglements; biaxial flow

Online: 7 March 2018 (05:09:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints201802.0128.v1

A Computational Analysis of Gas Jet Flow Effects on Liquid Aspiration in the Collison Nebulizer

James Feng

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: collison nebulizer; compressible gas jet flow; liquid aspiration; pneumatic atomization

Online: 20 February 2018 (13:26:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201805.0068.v1

Physical and Numerical Analysis of Bioclimatic Strategies Implemented on Social Housing

Cesar Augusto Real-Ramirez, Jose Maria Velazquez-Soto, Rosalba Orduña-Martinez, Jesus Isidro Gonzalez-Trejo

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: bioclimatic design; climatic conditions; wind tunnel; numerical methods; social housing; energy efficiency

Online: 3 May 2018 (11:26:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202201.0382.v1

Experimental Evaluation of Hydraulic Resistance of Pipelines from Modern Polymer Materials

Maksim Paliivets

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: pressure loss along length; Darcy hydraulic friction coefficient; local pressure loss in T-Junction; hydraulically short pressure pipeline; local resistance coefficient; flow rate; Reynolds number; flow rate; absolute and relative roughness of pipeline walls; turbulent flow mode

Online: 25 January 2022 (11:55:56 CET)

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Preprint REVIEW | doi:10.20944/preprints201803.0135.v3

Mathematical Modeling of Rogue Waves, a Survey of Conventional and Emerging Mathematical Methods and Solutions

Sergio Manzetti

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: rogue; wave; models; KdV; NLSE; non-local; ocean; optics

Online: 17 May 2018 (12:33:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0030.v3

Correct Expression of the Material Derivative in Continuum Physics

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: material derivative; continuum physics

Online: 28 April 2020 (09:40:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0071.v1

An Intrinsic Formulation of Incompressible Navier-Stokes Turbulent Flow

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Turbulence, mean velocity, uctuation velocity, the Reynolds stress tensor, vorticity, turbulence closure problem

Online: 3 August 2018 (15:44:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0061.v1

Stress Energy Tensor Study in Fluid Mechanics

Roman Baudrimont

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Fluid Mechanic, Pulse Energy Tensor, General Relativity

Online: 5 March 2019 (12:08:48 CET)

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Preprint REVIEW | doi:10.20944/preprints201812.0295.v1

Vortex Interactions Subjected to Deformation Flows: A Review

Konstantin V. Koshel, Eugene A. Ryzhov, Xavier J. Carton

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: flow; deformation flow; point vortex; elliptic vortex; chaotic dynamics; parametric instability; stability islands

Online: 25 December 2018 (05:15:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints201806.0461.v2

The Reynolds Navier-Stokes Turbulence Equations of Incompressible Flow Are Closed Rather Than Unclosed

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulence; the Reynolds stress tensor; turbulence closure problem

Online: 2 July 2018 (05:42:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0248.v3

Molecular Mechanisms Underlying Lubrication by Ionic Liquids: Activated Slip and Flow

Mengwei Han, Rosa M. Espinosa-Marzal

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: ionic liquids, friction, lubrication mechanisms, surface forces apparatus, atomic force microscopy.

Online: 17 July 2018 (08:22:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0327.v1

Evaporation Boundary Conditions for the Linear R13 Equations Based on the Onsager Theory

Alexander Felix Beckmann, Anirudh Singh Rana, Manuel Torrilhon, Henning Struchtrup

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: rarefied gas dynamics; modelling evaporation; R13-equations

Online: 18 July 2018 (09:55:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0138.v2

Reynolds' Turbulence Solution

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulence; number of unknowns; the Reynolds stress tensor; RANS; turbulence closure problem

Online: 30 October 2019 (04:49:17 CET)

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Preprint REVIEW | doi:10.20944/preprints201809.0416.v1

Sessile droplets on deformable substrates

Gulraiz Ahmed, Nektaria Koursari, Anna Trybala, Victor M. Starov

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: deformable substrates; surface forces; droplets; hysteresis

Online: 20 September 2018 (14:55:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0114.v2

Two-Way Coupling Fluid-Structure Interaction (FSI) Approach to Inertial Focusing Dynamics Under Dean Flow Patterns in Asymmetric Serpentines

Eric Pedrol, Jaume Massons, Francesc Díaz, Magdalena Aguiló

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: inertial focusing; dean flow; serpentine; fsi; two-way coupling

Online: 30 August 2018 (11:59:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0128.v2

A Computational Analysis of Gas Jet Flow Effects on Liquid Aspiration in the Collison Nebulizer

James Q. Feng

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: collison nebulizer; compressible gas jet flow; liquid aspiration; pneumatic atomization

Online: 5 March 2018 (04:08:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0345.v1

Evidence of Landau Damping in a Fluid Coupled with an Anharmonic Lattice

Andrei Ludu, Eric Padilla, M. A. Qaayum Mazumder

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Landau damping; resonant transfer; anharmonic lattice; nonlinear waves; collective modes; gravity waves; Stokes flow; Basset drag force; surfactant approximation; fractional derivative; anharmonic

Online: 15 November 2018 (05:43:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0135.v1

Enhancement in Inverse Pyramid SERS Substrates with Entrapped Gold Nanoparticles

István Rigó, Miklos Veres, László Himics, Zsuzsanna Pápa, Orsolya Hakkel, P. Fürjes

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Surface-enhanced Raman spectroscopy (SERS); surface plasmons; Finite-Difference Time-Domain (FDTD) method; electromagnetic (EM) enhancement

Online: 13 September 2019 (12:36:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0491.v1

Methods of Controlling Lift-off in Conductivity Invariance Phenomenon for Eddy Current Testing

Zhongwen Jin, Yuwei Meng, Rongdong Yu, Ruochen Huang, Mingyang Lu, Hanyang Xu, Xiaobai Meng, Qian Zhao, Zhijie Zhang, Anthony Peyton, Wuliang Yin

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Conductivity Invariance Phenomenon; Conductivity invariance lift-off; Sensor design; Eddy current testing; Electrical conductivity; Non-destructive testing

Online: 31 May 2020 (18:37:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0114.v1

Two-Way Coupling FSI Approach to Inertial Focusing Dynamics Under Dean Flow Patterns in Asymmetric Serpentines

Eric Pedrol, Jaume Massons, Francesc Díaz, Magdalena Aguiló

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: inertial focusing; dean flow; serpentine; fsi; two-way coupling

Online: 6 August 2018 (10:34:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0080.v1

Computational Study of Chemical Reactions During Heat and Mass Transfer in in Magnetized Partially Ionized Nano-Liquid

M. Nawaz, Shafia Rana

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: homogeneous and heterogeneous reactions; hall and ion-slip currents; nanofluid; MHD; partially ionized

Online: 6 December 2018 (08:47:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0438.v1

Adiabatic Thermodyhamics

Christian Fronsdal

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: entropy; thermodynamics; conservative hydrodynamics; rotations; meniscus; planets; negative pressure

Online: 19 November 2018 (09:42:08 CET)

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Working Paper ARTICLE

Some New Light on the Study of Fluid Flow in Closed Conduits: An Experimental Protocol to Identify the Value of a Misconstrued Constant

Hubert M Quinn

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: bed permeability; Kozeny/Carman; Ergun; friction factor; porosity; UHPLC

Online: 30 May 2019 (10:41:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201902.0230.v1

Effect of the Concentration of Sand in a Mixture of Water and Sand Flowing through PP and PVC Elbows on the Minor Head Loss Coefficient

Piotr Wichowski, Tadeusz Siwiec, Marek Kalenik

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Two-phase flow, Sand concentration, PVC and PP 90-degree elbow, Pressure drop, Minor head losses, Mathematical model

Online: 25 February 2019 (14:35:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0067.v1

Streamline's Shape Theory

Yuvaraj George

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Mathematical Model; Streamline; Shape of the body; Theory

Online: 5 April 2019 (15:28:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0278.v1

Simulation of Air Puff Tonometry Test Using Arbitrary Lagrangian-Eulerian (ALE) Deforming Mesh for Corneal Material Characterisation

Osama Maklad, Ashkan Eliasy, Kai-Jung Chen, Vassilios Theofilis, Ahmed Elsheikh

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: ocular biomechanics; intraocular pressure (iop); fluid structure interaction (fsi); arbitrary lagrangian-eulerian mesh (ale)

Online: 25 September 2019 (08:16:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0192.v1

A Conjecture on the Solution Existence of the Navier-Stokes Equation

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: solution existence condition; the Navier-Stokes equations; velocity gradient; tensor determinant

Online: 9 July 2020 (12:25:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0412.v1

An Extension of the All-Mach Number Pressure-Based Solution Framework for Numerical Modelling of Two-Phase Flows with Interface

Matvey Kraposhin, Aleksandr Kukharskii, Viktoria Korchagova, Aleksandr Shevelev

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: two-phase flow; compressible flow; interfacial flow; computational hydrodynamic; computational gas dynamic; finite volume method; OpenFOAM; All-Mach number solver

Online: 31 May 2022 (07:09:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0622.v1

Closed integral-differential equations of incompressible Navier-Stokes turbulent flow

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Turbulence, the Reynolds stress tensor, turbulence closure problem

Online: 31 July 2018 (12:37:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0510.v1

Symbolic Regression Based Genetic Approximations of the Colebrook Equation for Flow Friction

Pavel Praks, Dejan Brkić

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Colebrook equation; flow friction; turbulent flow; genetic programming; symbolic regression; explicit approximations

Online: 30 August 2018 (05:05:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0264.v1

Temporally and Spatially Resolved Emission Spectroscopy of Cyanide, Hydrogen and Carbon in Laser-Induced Plasma

Christian G. Parigger, Christopher M. Helstern, Ghaneshwar Gautam

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: laser-induced plasma; atomic spectroscopy; molecular spectroscopy; cyanide; hydrogen; carbon

Online: 26 June 2019 (07:49:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0329.v1

Investigation of Non-Thermal Plasma Assisted Charcoal Gasification for Production of Hydrogen-Rich Syngas

Yin Pang, Thomas Hammer, Dominik Mueller, Juergen Karl

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: non-thermal plasma; charcoal gasification; carbon conversion; hydrogen release; reaction kinetics; reaction mechanism

Online: 31 January 2019 (14:20:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202005.0278.v1

Flow Pattern and Pressure Drop for Oil-Water Flows in and around 180° Bends

Paul Onubi Ayegba, Lawrence C. Edomwonyi-Otu, Abdulkareem Abubakar, Nurudeen Yusuf

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: U-bend; oil-water flow; flow pattern; pressure losses; flow redevelopment

Online: 16 May 2020 (19:00:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0116.v1

A New Analytical Procedure to Solve Two Phase Flow in Tubes

Terry Moschandreou

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: fluid dynamics; two phase flow; level set function; cylindrical coordinates; continuity equation

Online: 10 April 2018 (08:14:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0071.v3

An Intrinsic Formulation of Incompressible Navier-Stokes Turbulent Flow

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulence; mean velocity; uctuation velocity; the Reynolds stress tensor; vorticity; turbulence closure problem

Online: 9 July 2019 (05:00:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0228.v1

Free-Flowing Shear-Thinning Liquid Film in Inclined μ-Channels

Angeliki T. Koupa, Yorgos G. Stergiou, Aikaterini A. Mouza

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: free-flowing film; FFMR; inclined μ-channel; non-Newtonian; shear thinning; μ-PIV; me-niscus

Online: 19 December 2018 (03:03:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0328.v1

On Moderate-Rayleigh-Number Convection in an Inclined Porous Layer

Baole Wen, Gregory P. Chini

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: convection; porous media; secondary stability; Floquet theory; localized states

Online: 30 April 2019 (11:20:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0426.v1

Ion Acceleration in Multi-Fluid Plasma: Including Charge Separation induced Electric Field Effects in Supersonic Wave Layers

Ross Burrows

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: solitons; electrostatic solitary waves; pickup ions; perpendicular shock waves; multi-fluid plasma

Online: 29 March 2020 (06:53:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0262.v2

Aerodynamic Shape, Scaling Law of Drag and Terminal Speed of the Dandelion

Bohua Sun, Xiao-Lin Guo

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Dandelion; pappus; flexible filament; wind-dispersal; aerodynamic shape; drag; Reynolds number; scaling laws

Online: 12 April 2023 (04:46:14 CEST)

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Working Paper ARTICLE

Flow and Convection in Metal Foams: A Survey and New CFD Results

Beatrice Pulvirenti, Michele Celli, Antonio Barletta

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Metal Foam; Porous Medium; Convection; Local Thermal Non-Equilibrium

Online: 15 August 2020 (10:04:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0657.v1

Evaluation of Non-linear Convection Aspect to Analyze Rate Type Chemically Reacted Fluid Considering Cattaneo-Christov Dual Diffusive Model

Syed Zaheer Abbas

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Generalized Fourier-Fick laws; Chemical reaction; Jeffrey material; Heat source; Variable thermal conductivity; Nonlinear convection; Variable mass diffusivity

Online: 27 July 2020 (00:56:53 CEST)

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Working Paper REVIEW

Quantum Mechanical and Optical Analogies in Surface Gravity Water Waves

Georgi Gary Rozenman, Shenhe Fu, Ady Arie, Lev Shemer

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Surface Gravity Water Waves; Nonlinear Schrodinger Equation; Cubic Phase

Online: 2 April 2019 (14:28:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0038.v1

Novel Fabrication Tools for Dynamic Compression Targets with Engineered Voids Using Photolithography Methods

Silvia Pandolfi, Thomas Carver, Daniel Hodge, Andrew FT Leong, Kelin Kurzer-Ogul, Philip Hart, Eric Galtier, Dimitri Khaghani, Eric Cunningham, Bob Nagler, Hae Ja Lee, Cindy Bolme, Kyle Ramos, Kenan Li, Yanwei Liu, Anne Sakdinawat, Stefano Marchesini, Pawel Marek Kozlowski, Chandra Breanne Curry, Franz-Josef Decker, Sharon Vetter, Jessica Shang, Hussein Aluie, Matthew Dayton, David S Montgomery, Richard L Sandberg, Arianna E Gleason

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: ICF; shock compression; void collapse; hydrodynamic simulations; hydrodynamic instabilities

Online: 2 August 2022 (04:57:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202201.0240.v3

Turbulent Poiseuille Flow Modelling by an Modified Prandtl-van Driest Mixing Length

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Turbulent flow; Poiseuille flow; Prandtl mixing length; high heels velocity profile; Reynolds number

Online: 14 December 2022 (11:10:32 CET)

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Working Paper ARTICLE

Some New Light on the Study of Fluid Flow in Closed Conduits: An Experimental Protocol to Identify the Value of a Misconstrued Constant

Hubert Quinn

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: bed permeability; Kozeny/Carman; Ergun; friction factor; porosity; UHPLC

Online: 9 July 2019 (05:07:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0071.v2

An Intrinsic Formulation of Incompressible Navier-Stokes Turbulent Flow

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Turbulence, mean velocity, uctuation velocity, the Reynolds stress tensor, vorticity, turbulence closure problem

Online: 4 October 2018 (14:43:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0134.v1

Measurements of Gaseous Hydrogen-Nitrogen Laser-Plasma

Christian Parigger

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: atomic and molecular spectroscopy; time-resolved spectroscopy; laser plasma; laser-induced optical breakdown; stellar astrophysics spectra; white dwarf stars; hydrogen

Online: 14 June 2019 (15:01:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0008.v3

Closed Form Solution of Plane-Parallel Turbulent Flow Along an Unbounded Plane Surface

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: turbulent flow; Prandtl mixing length; Reynolds number; boundary layer

Online: 6 January 2022 (11:26:17 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202108.0416.v1

Natural Selection beyond Life? A Workshop Report

Sylvain Charlat, André Ariew, Pierrick Bourrat, Maria Ferreira Ruiz, Thomas Heams, Philippe Huneman, Sandeep Krishna, Michael Lachmann, Nicolas Lartillot, Louis Le Sergeant d'Hendecourt, Christophe Malaterre, Philippe Nghe, Etienne Rajon, Olivier Rivoire, Matteo Smerlak, Zorana Zeravcic

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: Natural selection; individuality; levels of selection; evolutionary biology; physics; philosophy of biology; exobiology; origins of life

Online: 20 August 2021 (13:42:15 CEST)

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Natural selection is commonly seen not just as an explanation for adaptive evolution, but as the inevitable consequence of “heritable variation in fitness among individuals”. Although it remains embedded in biological concepts, such a formalisation makes it tempting to explore whether this precondition may be met not only in life as we know it, but also in other physical systems. This would imply that these systems are subject to natural selection and may perhaps be investigated in a biological framework, where properties are typically examined in light of their putative functions. Here we relate the major questions that were debated during a three-day workshop[1] devoted to discussing whether natural selection may take place in non-living physical systems. We start this report with a brief overview of research fields dealing with “life-like” or “proto-biotic” systems, where mimicking evolution by natural selection in test tubes stands as a major objective. We contend the challenge may be as much conceptual as technical. Taking the problem from a physical angle, we then discuss the framework of dissipative structures. Although life is viewed in this context as a particular case within a larger ensemble of physical phenomena, this approach does not provide general principles from which natural selection could be derived. Turning back to evolutionary biology, we ask to what extent the most general formulations of the necessary conditions or signatures of natural selection may be applicable beyond biology. In our view, such a cross-disciplinary jump is in large part impeded by reliance on individuality as a central yet implicit and loosely defined concept. Overall, these discussions thus lead us to conjecture that understanding, in physico-chemical terms, how individuality emerges and how it can be recognised, will be essential in the search for instances of evolution by natural selection outside of living systems. [1] Natural Selection Beyond Life? Observing the physico-chemical world through Darwinian glasses; 12-15 November 2019 - Institut d'Etudes Scientifiques, Cargèse, France

Preprint ARTICLE | doi:10.20944/preprints202003.0030.v1

Correct Expression of Material Derivative in Continuum Physics

Bohua Sun

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: material derivative; continuum physics

Online: 2 March 2020 (15:39:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0065.v1

Dielectric Properties of Aqueous Solutions at Normal and High Dilutions

Sergey Vladimirovich Savel’ev, Ludmila Arkad’evna Morozova

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: radiothermal signals; radiobrightness temperature; normal and high dilution solutions; absorption coefficient; ion hydration shell; new dielectric properties; supramolecular interactions; dispersion

Online: 3 March 2022 (13:52:45 CET)

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Preprint ARTICLE | doi:10.20944/preprints202109.0438.v1

Statistical Analysis of Dynamic Subgrid Modeling Approaches in Large Eddy Simulation

Mohammad Khalid Hossen, Asokan Mulayath Variyath, Jahrul M Alam

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: large eddy simulation; vortex stretching; subgrid model; isotropic turbulence

Online: 24 September 2021 (14:10:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0230.v1

General Assessment of the Operational Utility of National Water Model Reservoir Inflows for Bureau of Reclamation Facilities

Francesca Viterbo, Laura Read, Kenneth Nowak, Andrew W. Wood, David Gochis, Robert Cifelli, Mimi Hughes

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: National Water Model; Water Management; Total Inflow

Online: 10 September 2020 (09:04:18 CEST)

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