Version 1
: Received: 13 July 2019 / Approved: 18 July 2019 / Online: 18 July 2019 (11:29:28 CEST)
How to cite:
Laws, P.; Saini, J.S.; Kumar, A. A Study on OpenFOAM's Overset Mesh Support Using Flow Past NACA 0018 Airfoil. Preprints2019, 2019070217. https://doi.org/10.20944/preprints201907.0217.v1
Laws, P.; Saini, J.S.; Kumar, A. A Study on OpenFOAM's Overset Mesh Support Using Flow Past NACA 0018 Airfoil. Preprints 2019, 2019070217. https://doi.org/10.20944/preprints201907.0217.v1
Laws, P.; Saini, J.S.; Kumar, A. A Study on OpenFOAM's Overset Mesh Support Using Flow Past NACA 0018 Airfoil. Preprints2019, 2019070217. https://doi.org/10.20944/preprints201907.0217.v1
APA Style
Laws, P., Saini, J.S., & Kumar, A. (2019). A Study on OpenFOAM's Overset Mesh Support Using Flow Past NACA 0018 Airfoil. Preprints. https://doi.org/10.20944/preprints201907.0217.v1
Chicago/Turabian Style
Laws, P., Jaskaran Singh Saini and Ajit Kumar. 2019 "A Study on OpenFOAM's Overset Mesh Support Using Flow Past NACA 0018 Airfoil" Preprints. https://doi.org/10.20944/preprints201907.0217.v1
Abstract
The open source CFD code OpenFOAM has emerged as one of the most popular alternative to commercial CFD solvers. The recent version of OpenFOAM supports overlapping grids, so called Overset mesh. In this type of mesh, one or more sub-collection of control volumes (or cells) are allowed to overlap with other set of cells. This allows for great flexibility in modelling Fluid Structure Interaction (FSI) problems. Fluid mesh can be standard structured mesh of a rectangular/cuboidal/or cylindrical domain. The structure mesh can be generated separately by creating multiple layers around a given body. The overset mesh functionality allows for overlapping or immersing this structured mesh inside the fluid mesh and a relevant FSI or moving dynamics problems can be solved. The idea of overset mesh has been around since eighties but its support in OpenFOAM is very recent. Most CFD codes which support overset mesh have either been in-house or commercial CFD codes. OpenFOAM's support for overset is the first major open source code resource available for CFD problems. The aim of this research is to solve a classical benchmark airfoil problem using OpenFOAM overset mesh and compare the numerical results with experimental result. We report here flow simulations results around NACA 0018. The result obtained from overset mesh compares convincingly well with experimental results. Computations have been carried out for Reynolds numbers in the range of 105 with angle of attack ranging from α= 5 degreeto α= 30 degreewith an interval of 5 degree. Turbulence is incorporated using k - ε turbulence model. This study helps developing confidence in using OpenFOAM overset support for more complicated flows and moving dynamics. This report is complemented with a brief description of finite volume discretization using overset mesh.
Keywords
OpenFOAM; overset meshing; NACA 0018; high Reynolds number; CFD
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
