Version 1
: Received: 4 July 2019 / Approved: 5 July 2019 / Online: 5 July 2019 (04:40:38 CEST)
How to cite:
Dong, B.; Wang, F.; Zhang, X.; Jiang, X. 3D Lattice Boltzmann Simulation of Droplet Evaporation on Patterned Surfaces: Study of Pinning-Depinning Mechanism. Preprints2019, 2019070087. https://doi.org/10.20944/preprints201907.0087.v1
Dong, B.; Wang, F.; Zhang, X.; Jiang, X. 3D Lattice Boltzmann Simulation of Droplet Evaporation on Patterned Surfaces: Study of Pinning-Depinning Mechanism. Preprints 2019, 2019070087. https://doi.org/10.20944/preprints201907.0087.v1
Dong, B.; Wang, F.; Zhang, X.; Jiang, X. 3D Lattice Boltzmann Simulation of Droplet Evaporation on Patterned Surfaces: Study of Pinning-Depinning Mechanism. Preprints2019, 2019070087. https://doi.org/10.20944/preprints201907.0087.v1
APA Style
Dong, B., Wang, F., Zhang, X., & Jiang, X. (2019). 3D Lattice Boltzmann Simulation of Droplet Evaporation on Patterned Surfaces: Study of Pinning-Depinning Mechanism. Preprints. https://doi.org/10.20944/preprints201907.0087.v1
Chicago/Turabian Style
Dong, B., Xinya Zhang and Xiang Jiang. 2019 "3D Lattice Boltzmann Simulation of Droplet Evaporation on Patterned Surfaces: Study of Pinning-Depinning Mechanism" Preprints. https://doi.org/10.20944/preprints201907.0087.v1
Abstract
The liquid-vapor phase change lattice Boltzmann method is used to investigate the pinning-depinning mechanism of the contact line during droplet evaporation on the stripe-patterned surfaces in 3D space. Considering the curvature of the contact line and the direction of the unbalanced Young’s force, the local force balance theory near the stripe boundary is proposed to explain the steady state of the droplets on the stripe-patterned surfaces. An equation is proposed to evaluate the characteristic contact angle of the stabilized droplets. During the evaporation of the droplet, the stick-slip-jump behavior and the CCR-Mixed-CCA mode can be well captured by the lattice Boltzmann simulation. When the contact line is pinned to the stripe boundary, the contact line in the direction perpendicular to the stripes is slowly moving while the curvature of the contact line is gradually increasing. The gradually increasing curvature of the contact line accelerates the movement of the contact line, and the final contact line is detached from the stripe boundary. The research results provide theoretical support and guidance for the design, improvement and application of patterned surfaces in the field of micro-fluidic and evaporation heat transfer.
Chemistry and Materials Science, Chemical 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.
