NUMERICAL　SIMULATION　OF　THE　TURBULENT　FLUID　FLOW　AND　PREDICTION　OF　INCIPIENT　CAVITATION　NUMBER　ON　ISOLATED　SURFACE　TRIANGULAR　PROTRUSION  

作　　者：Ren, Bing  Ni, Hangen 

机构地区：[1] Dalian Univ of Technology, Dalian, China

出　　处：《Journal of Hydrodynamics》1996年第1期67-75,共9页水动力学研究与进展B辑（英文版）

摘　　要：For any type of 2-dimensional flowing field, this paper has developed a very effective numerical technique in generating orthogonal computation grids, which shows a wide promise especially for microscale arbitrary shapes concerned. In simulating high speed flowing, it has been verified that Dynamic SGS model is a reliable tool available to engineers, especially in predicting inhomogeneous turbulence nowing. On the basis of physical and numerical methods, this paper has presented, respectively, experimental expression and numerical results for incipient cavitation number. For velocity no more than 15m/s, it was verified that the value of incipient cavitation number from the two different sources approximately coincided with each other.For any type of 2-dimensional flowing field, this paper has developed a very effective numerical technique in generating orthogonal computation grids, which shows a wide promise especially for microscale arbitrary shapes concerned. In simulating high speed flowing, it has been verified that Dynamic SGS model is a reliable tool available to engineers, especially in predicting inhomogeneous turbulence nowing. On the basis of physical and numerical methods, this paper has presented, respectively, experimental expression and numerical results for incipient cavitation number. For velocity no more than 15m/s, it was verified that the value of incipient cavitation number from the two different sources approximately coincided with each other.

关 键 词：numerical simulations turbulence model incipient cavitation 

分 类 号：O352.1[理学—流体力学]