湿蒸汽两相流动问题的耦合求解  

A COUPLE METHOD FOR THE SOLUTION OF WET STEAM TWO PHASE FLOWS

作　　者：巫志华[1] 李亮[1] 丰镇平[1] 

机构地区：[1]西安交通大学叶轮机械研究所,陕西西安710049

出　　处：《工程热物理学报》2005年第4期578-580,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目资助(No.50176035)国家自然科学基金重点项目(No.50336050)

摘　　要：控制湿蒸汽两相流动(汽相和液相)的方程个数多,其数值模拟通常采用将两相分开、两相间用参数传递的方法来处理。本文首次尝试将湿蒸汽两相流动汽相和液相的8个控制方程统一求解,推导了这一方程组的特征值及对应的特征向量,结合控制体积方法,采用TVD格式和时间推进法数值求解这一耦合方程组,研发了相应计算软件。对二维喷管中的自发凝结和非均质凝结算例进行的数值模拟和分析,表明了本文方法和计算软件的有效性和可靠性。There are a large number of governing equations for the wet steam two phase flows, and usually the methods of separating the two phases and transferring parameter between the two phases are used for the numerical simulation of the flows. In this paper, for the first time, we have tried to unite the 8 equations of the gaseous phase and the liquid phase to solve the problem of the wet steam two phase flows, and the eigenvalue of the series of equations and the corresponding eigenvector are deduced. Combining with the control volume method, a TVD scheme and time marching method are used to deal with this series of coupling equations. And the relevant numerical software is developed and implemented. The 2-D numerical simulation and analysis on the homogeneous condensation and heterogeneous condensation in the nozzle are performed, and the results demonstrate that the present methods and software are valid and credible.

关 键 词：湿蒸汽两相流 自发凝结 非均质凝结 耦合求解 特征值 特征向量 

分 类 号：O354[理学—流体力学]