IMPROVEMENT OF BUBBLE MODEL FOR CAVITATING FLOW SIMULATIONS

查看全文 作　　者：TAMURA [1]Y.;MATSUMOTO [2]Y.

机构地区：[1]Computational Science and Engineering, Toyo University, Kujirai 2100, Kawagoe,Saitama 350-8585, Japan;[2]Mechanical Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku,Tokyo 113-8656, Japan

出　　处：《Journal of Hydrodynamics》索引2009年第21卷第1期,共6页

摘　　要：In the present research, a bubble dynamics based model for cavitating flow simulations is extended to higher void fraction region for wider range of applications. The present bubble model is based on the so-called Rayleigh-Plesset equation that calculates a temporal bubble radius with the surrounding liquid pressure and is considered to be valid in an area below a certain void fraction. The solution algorithm is modified so that the Rayleigh-Plesset equation is no more solved once the bubble radius (or void fraction) reaches at a certain value till the liquid pressure recovers above the vapor pressure in order to overcome this problem. This procedure is expected to stabilize the numerical calculation. The results of simple two-dimensional flow field are presented compared with the existing bubble model. 关键词：动力学模型气泡半径空泡流模拟 RAYLEIGH set方程液体压力空隙率

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IMPROVEMENT OF BUBBLE MODEL FOR CAVITATING FLOW SIMULATIONS

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