关键词: 型腔充填, 气液两相流, 自由表面, 数值模拟

Abstract:

According to the features of mold filling, the velocity field of gas liquid two phase flow was calculated in the fixed computational domain without mixed fluid. The continuum equation with conserved volume type was used to avoid divergence because of the big difference in density between gas and liquid. The conserved scalar equation was used to describe the free surface during the mold filling process, and the free surface was tracked by solving the conserved scalar equation under the condition of the given velocity field by PHOENICS code. Two cases were simulated with the method developed in the present paper, and the results showed that the method developed here can be easily used for the high speed filling process and 3 dimensional shaped cavity.

Key words: mold filling, gas- liquid two-phase fluid flow, fr ee sur face, numerical simulation