摘要
本文基于焓的对流扩散方程,提出一种求解具有糊状区液固相变对流传热问题的有限元方法,避免了通常采用温度对流扩散方程进行数值求解所带来的许多困难,对问题的解决更加自然、简便。算例表明,本文提出的方法是有效且可行的。
A finite element method based on enthalpy formulation of convection-diffusion is developed for numerical solution of liquid-solid phase change problems. It avoids many difficulties which will appear when temperature formulation be used. The basic feature of the proposed method lies in its naturality and the simplicity. The test problems of freezing in a thermal cavity (planar and axisymmetrial problems) under natural convection are used to demonstrate the reliability and the efficiency of this method.
出处
《力学学报》
EI
CSCD
北大核心
1993年第1期123-127,共5页
Chinese Journal of Theoretical and Applied Mechanics
关键词
焓
对流传热
相变
有限元
液固相变
enthalpy, mushy region, convect heat transfer, FEM, phase change
