使用界面追踪对膜态沸腾的数值研究(英文)  

Numerical Study on Film Boiling with Interface Tracking

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：《计算物理》2008年第5期576-584,共9页Chinese Journal of Computational Physics

基　　金：National Natural Science Foundation of China(No.50376036)

摘　　要：提出一种计算带相变的自由界面的数值算法.基于分段线性界面重构(PLIC)的VOF(volume-of-fluid)方法用于追踪自由界面,并对汽液交界面上的相变导致的不连续速度场给出处理方法.此方法容易实施且被证明是有效的.流场的求解使用SIMPLE方法,表面张力使用连续表面力模型(CSF)进行计算.在三维直角坐标系下,模拟了水平壁面上的膜态沸腾,在二维适体坐标系下,模拟了竖直圆头柱体表面的自然对流膜态沸腾.计算结果与理论关系式符合较好.A numerical method for simulation of interfacial flows with phase change is presented. A volume-of-fluid （VOF） method based on piecewise linear interface construction （PLIC） is used to track interface. Spocial treatment is taken to deal with discontinuous velocity field due to phase change at liquid-vapor interface. The treatment is easy and effective. SIMPLE method is used for flow field and a CSF model for surface tension. The method is used to simulate three-dimensional film boiling on a horizontal plate with Cartesian coordinates and axisymmetric two-dimensional natural convection film boiling on a hemisphericallyended rod with body fitted coordinates. They are in good agreement with analytical correlations.

关 键 词：膜态沸腾 VOLUME-OF-FLUID 相变 

分 类 号：TL33[核科学技术—核技术及应用]