On two-phase flow solvers in irregular domains with contact line

JOURNAL OF COMPUTATIONAL PHYSICS

卷:321

Article

Lepilliez, Mathieu^1,2,3  Popescu, Elena Roxana¹  Gibou, Frederic^4,5  Tanguy, Sebastien¹ 

[1] Inst Mecan Fluides Toulouse, 2bis Allee Prof Camille Soula, F-31400 Toulouse, France

[2] Ctr Natl Etud Spatiales, 18 Ave Edouard Belin, F-31401 Toulouse 9, France

[3] Airbus Defence & Space, 31 Ave Cosmonautes, F-31402 Toulouse 4, France

[4] Univ Calif Santa Barbara, Dept Mech Engn, Santa Barbara, CA 93106 USA

[5] Univ Calif Santa Barbara, Dept Comp Sci, Santa Barbara, CA 93106 USA

关键词: Sharp interface methods;    Irregular domains;    Implicit viscosity;    Contact lines;    Level set method;    Ghost-Fluid Method;   

DOI  :  10.1016/j.jcp.2016.06.013

来源: Elsevier

【 摘 要 】

We present numerical methods that enable the direct numerical simulation of two-phase flows in irregular domains. A method is presented to account for surface tension effects in a mesh cell containing a triple line between the liquid, gas and solid phases. Our numerical method is based on the level-set method to capture the liquid-gas interface and on the single-phase Navier-Stokes solver in irregular domain proposed in [35] to impose the solid boundary in an Eulerian framework. We also present a strategy for the implicit treatment of the viscous term and how to impose both a Neumann boundary condition and a jump condition when solving for the pressure field. Special care is given on how to take into account the contact angle, the no-slip boundary condition for the velocity field and the volume forces. Finally, we present numerical results in two and three spatial dimensions evaluating our simulations with several benchmarks. (C) 2016 Elsevier Inc. All rights reserved.

【 授权许可】

Free