Abstract
The paper presents a numerical simulation method for two-phase flow at high Reynolds numbers, intended to describe the development of flow instabilities (Kelvin-Helmholtz, Rayleigh-Taylor) at the liquid-gas interface. Numerical diffusion has to be restricted to a bare minimum. To reach this goal, several enhancements have been made with respect to the existing CFD methods for two-phase flow: a parabolic reconstruction of the interface to suppress spurious velocities; a structure-preserving discretization to ensure a correct discrete exchange between potential and kinetic energy; and a two-velocity model featuring a discontinuous tangential velocity to approximate the unresolved viscous shear layer along the interface. Examples are presented for tips of breaking waves.
| Original language | English |
|---|---|
| Title of host publication | Proceedings 9th European Congress on Computational Methods in Applied Sciences and Engineering |
| Publisher | International Centre for Numerical Methods in Engineering (CIMNE) |
| Number of pages | 11 |
| DOIs | |
| Publication status | Published - 3-Jun-2024 |
| Event | 9th European Congress on Computational Methods in Applied Sciences and Engineering - Lisboa Duration: 3-Jun-2024 → 7-Jun-2024 |
Conference
| Conference | 9th European Congress on Computational Methods in Applied Sciences and Engineering |
|---|---|
| City | Lisboa |
| Period | 03/06/2024 → 07/06/2024 |
Keywords
- multiphase flow
- sharp interface
- two-velocity model
- structure-preserving discretization
- finite volume method