基于群体平衡原理的双流体模型在液氮流动沸腾数值计算中的应用  

Application of Population Balance Based Two-Fluid Model in Numerical Simulation of Boiling Flow of Nitrogen

作　　者：李祥东[1] 周丽敏[2] 汪荣顺[1] 杨燕华[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]江苏工业学院材料科学与工程系,常州213164

出　　处：《上海交通大学学报》2008年第8期1282-1286,共5页Journal of Shanghai Jiaotong University

基　　金：中国博士后科学基金资助项目(20070410722)

摘　　要：将双流体模型与群体平衡原理耦合为一套新的双流体模型,并建立适当的封闭方程及边界条件,该模型以传统双流体为基础,纳入了群体平衡原理及MUSIG模型,并考虑了碰撞、聚合、相变等因素对汽泡直径及数量密度的影响.通过结合适当的封闭方程及边界条件,该模型能够在更广的范围内对两相流参数的多维分布和变化进行有效预测,为液氮流动沸腾的数值模拟提供了必要的理论基础.A new two-fluid model was proposed by coupling the classical two-fluid model and the population balance theory, and necessary closure correlations and boundary conditions were established. The new model, which is based on the classical two-fluid model, includes the population-balance theory and the MUSIG model, as well as the phenomenological models of bubble collision, coalescence and phase change. By incorporating the closure correlations and boundary conditions, the new model can make a good prediction in a wider range than the classical two-fluid model.

关 键 词：液氮 流动沸腾 双流体模型 汽泡直径 群体平衡 数值模拟 

分 类 号：TB61[一般工业技术—制冷工程] TK124[动力工程及工程热物理—工程热物理]