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Simulation of immiscible two-phase flows based on a kinetic diffuse interface approach

Abstract : A direct numerical simulation (DNS) code is developed to simulate immiscible two-phase flows based on the recently developed discrete unified gas-kinetic scheme (DUGKS). This scheme simulates hydrodynamic equations of the quasi-incompressible Cahn-Hilliard-Navier-Stokes system by the use of two mesoscopic distributions and the proper design of their equilibrium distributions and source terms. Several immiscible two-phase flows are used to validate the scheme in both 2D and 3D, including a stationary droplet in 2D and 3D, the Rayleigh-Taylor flows, and two-phase homogeneous isotropic decaying turbulence. The results obtained by DUGKS are compared carefully to these from the literature and the ARCHER code, i.e., a Coupled Level Set-Volume of Fluid (CLSVOF) method. The comparisons indicate that DUGKS is a promising scheme for direct numerical simulations of immiscible two-phase flows.
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https://hal.archives-ouvertes.fr/hal-02315240
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Submitted on : Monday, October 14, 2019 - 12:50:53 PM
Last modification on : Wednesday, November 3, 2021 - 4:15:58 AM

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  • HAL Id : hal-02315240, version 1

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Tao Chen, Victor Chéron, Zhaoli Guo, Jorge César C Brändle de Motta, Thibault Menard, et al.. Simulation of immiscible two-phase flows based on a kinetic diffuse interface approach. International Conference on Multiphase Flow, May 2019, Rio de Janeiro, Brazil. ⟨hal-02315240⟩

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