基于FVS法的气液两相瞬变流计算及特性研究  

Study on calculation and characters of gas-liquid two-phase transient flow using FVS method

作　　者：蒋劲[1] 翁晓红[1] 符向前[1] 诸葛伟林[1] 

机构地区：[1]武汉大学动力与机械学院动力系,湖北武汉430072

出　　处：《水动力学研究与进展（A辑）》2002年第4期430-439,共10页Chinese Journal of Hydrodynamics

摘　　要：本文研究了求解气液两相瞬变流方程的方法———矢通量分裂 (FVS)法 ,将控制方程中的矢通量按照矢量雅可比矩阵分裂为两个亚矢通量并建立了稳定的差分格式 ,该方法能自动准确地捕捉到两相瞬变流中的激波。该方法计算数据与实验数据对比 ,能很好的吻合。本文还讨论了初始空穴率 α0 ,气体释放系数Ck对压力p ,波速a 。A method of vector flux splitting for solving the equations of gas liquid two phase transient flow was studied. The governing equations of two phase transient flow were changed into the flux vector form, and the flux vector was spilt into two sub flux vectors by using the Jarcobi matrix. The finite difference equations were formulated, with the upwind scheme. The method was proved to be capable of capturing the shock waves automatically and accurately and the scheme stable. The computed results agree well with experimental data. The effects of initial void fraction α 0 and gas release coefficient C k on the presure p, the wave velocity a, the void fraction α were discussed.

关 键 词：矢量通 瞬变流 气流两相流 气体释放 

分 类 号：S227.1[农业科学—农业机械化工程]