A numerical model for the simulation of low Mach number gas-liquid flows
This work is devoted to the numerical simulation of gas-liquid flows. The liquid phase is considered as incompressible, while the gas phase is treated as compressible in the low Mach number approach. We present a model and a numerical method aimed at the computation of such two-phase flows. The numerical model uses a lagrangian front-tracking method to deal with the interface. The model being validated with a 1-D reference solution, results in the 2-D case are presented. Two air bubbles are enclosed in a rigid cavity and surrounded with liquid water. As the initial pressure of the two bubbles is set to different values, an oscillatory motion is induced in which the bubbles undergo alternate compression and dilatation associated with alternate internal heating and cooling. This oscillatory motion can not be sustained and a damping is finally observed. It is shown in the present work that thermal conductivity of the liquid has a significant effect on both the frequency and the damping time scale of the oscillations.
Gas-liquid flows Interface Compressible gas Numerical simulations
V.Daru M.-C.Duluc P.Le Quere D.Juric
LIMSI-CNRS, Orsay Cedex, France SINUMEF - ENSAM, Paris, France LIMSI-CNRS, Orsay CNAM, Paris LIMSI-CNRS, Orsay
国际会议
西安
英文
775-780
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）