基于VOF方法的带相变的自由界面的计算  

SIMULATION OF FREE SURFACE WITH PHASE CHANGE BASED ON A VOF METHOD

作　　者：袁明豪[1] 杨燕华[1] 李天舒[1] 胡志华[1] 

机构地区：[1]上海交通大学 核科学与工程学院,上海200240

出　　处：《工程热物理学报》2007年第6期961-964,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学(No.50376036)

摘　　要：对于气液自由界面上存在相变(蒸发、沸腾或凝结)的情况,由于此时不仅物性分布是不连续的,速度场也发生了不连续,这无论对于捕捉或追踪自由界面的算法本身还是流场的求解都带来了一定的困难.本文提出一种基于VOF方法的计算带相变的自由界面的算法,对这种情况下的关键问题-速度场的不连续性给出了解决方法.并用编制的二维程序计算了水平壁面上的膜态沸腾,并将计算结果与理论公式进行了比较.If phase change, evaporation or condensation, occurs at liquid-vapor interface, the velocity field apart from fluid property distribution becomes discontinuous. It brings difficulties to both the algorithm to track free surface and the solution of flow field. In this paper, a numerical method based on VOF method to simulate free surface problems with phase change is presented. Some special treatment is taken to deal with the discontinuous velocity field in such situation. A two-dimensional code is developed to simulate film boiling on a horizontal plate and the simulation results are compared with analytical correlations.

关 键 词：自由界面 VOF 相变 

分 类 号：TL33[核科学技术—核技术及应用]