A Robust Flux Splitting on Simulation of Transient Cavitated Flows Based On Single and Two Fluid Models

A Robust Flux Splitting on Simulation of Transient Cavitated Flows Based On Single and Two Fluid Models

Niu, Y.Y.
Lin, Y.C.

2006-09-06

In this paper, a modification of pressure-velocity diffusion terms in AUSMDV is proposed to compute the compressible cavitated liquid-gas flows. As we know, cavitation phenomena are widely seen in multi-phase flow with different sizes of time and length scale. An accurate resolution of multi-scale phenomena such as material interfaces, contact surfaces and discontinuities due to the interaction among multi-phase flows is still an unsolved problem. In this work, a mixture type Euler equation with volume of fraction (VOF) model and a six equation two-fluid approach with the stratified flow model are selected to model liquid-gas flows and their phase transition phenomena based on individual equation of state and an empirical saturation model. Benchmark tests include several problems like 1-D shock-condensation shock tube, Ransom's faucet, 2D cavitated nozzle and Sock-bubble interaction problems. Based on the proposed pressure-velocity coupling term, AUSMDV demonstrates accurate capturing of interfaces, shock waves and cavitatied phenomena.

cavitation
phase change
multi-phase flow
AUSMDV

http://resolver.tudelft.nl/uuid:920462fe-baa0-4d9c-9e4f-ec6db999a279

Conference proceedings

conference paper

(c) 2006 Niu, Y.Y.; Lin, Y.C.