气液两相流体绕方柱流动的数值模拟  

NUMERICAL STUDY ON THE GAS-LIQUID TWO-PHASE CROSS FLOW AROUND THE SQUARE-SECTION CYLINDER

作　　者：卢家才[1] 李永光[2] 林宗虎[3] 李瑞阳[1] 

机构地区：[1]上海理工大学热能与环保研究所,上海200093 [2]上海电力学院动力系,上海200092 [3]西安交通大学热能工程系,西安710049

出　　处：《工程热物理学报》2001年第6期751-754,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究规划项目(No.G1999022308);中国博士后科学基金; 上海市曙光计划基金资助项目(NO.98DG35

摘　　要：本文详细给出了气液两相流动双流体模型下的各控制方程组和相间作用力，通过将气泡引起的紊流与剪切引起的紊流线性叠加给出了气液两相流动的紊流模型。通过给出的边界条件，采用ＩＴＡ－ＩＰＳＡ算法对垂直上升的气液两相流横向冲刷方柱引起漩涡证替脱落的过程进行了数值模拟，得到了流场和局部含气率变化的示意图，数值模拟与试验的结果基本一致。Governing equations of two fluid model for gas-liquid two-phase flow have been presented in detail. A K-ε model is also developed to predict gas-liquid two-phase flow turbulence with a basic assumption of that the shear-induced turbulence and bubble-induced turbulence may be linearly superposed. ITA-IPSA is developmeat for the solution of the transient problems in the gas-liquid two-phase flow. The upward gas-liquid two-phase cross flow around a square cylinder is numerical simulated by giving boundary conditions, and It successfully predicts detailed flow structure and void fraction distribution around the cylinder.

关 键 词：气液两相流 绕方柱 流动双体模型 数值模拟 流动 热交换 流场 

分 类 号：O359[理学—流体力学] TK124[理学—力学]