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A phase inversion benchmark for multiscale multiphase flows
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DOI：10.1016/j.jcp.2021.110810.png)
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Abstract
En 中文
A series of benchmarks based on the physical situation of phase inversion between two immiscible liquids is presented. These benchmarks aim at progressing towards the direct numerical simulation of two-phase flows. Several CFD codes developed in French laboratories and using either Volume-of-Fluid or Level-Set interface tracking methods are used to provide physical solutions of the benchmarks, convergence studies and code comparisons. Two typical configurations are retained, with integral scale Reynolds numbers of 1.3710(4) and 4.3310(5), respectively. The physics of the problem are probed through macroscopic quantities such as potential and kinetic energies, or enstrophy. In addition, scaling laws for the temporal decay of the kinetic energy are derived to check the physical relevance of the simulations. Finally the droplet size distribution is probed. Additional test problems are also reported to estimate the influence of viscous effects in the vicinity of the interface. (C) 2021 The Authors. Published by Elsevier Inc.
Keywords:
Phase inversion flow
Water-oil flow
Atomization
Multiphase flow benchmark
Volume of Fluid method
Level-Set method
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