通气空泡流的多相流模型与数值模拟  

An multiphase model on simulating a ventilated cavitating flow

作　　者：陈鑫[1] 鲁传敬[1] 吴磊[1] 

机构地区：[1]上海交通大学工程力学系,上海200030

出　　处：《水动力学研究与进展（A辑）》2005年第z1期916-920,共5页Chinese Journal of Hydrodynamics

基　　金：自然科学基金(10372061);博士点基金(20030248001)资助

摘　　要：本文基于Reynolds平均Navier-Stokes方程和Mixture多相流模型．并耦合自然空泡模型,提出一种用于求解通气空化与自然空化共同作用下的通气空泡流的方法。模拟了定常状态下绕三维轴对称体的通气空泡流动,验证了模型的有效性;并着重研究了通气量对通气气幕及水动力特性的影响。计算结果表明,适当的通气世对产生稳定有效的超空泡是十分重要的。Based on the time-dependent Reynolds-Averaged Navier-Stokes equations and Mixture-multiphase model, an approach was presented for solving venlilaled cavilaling flow by coupling natural cavitation model. The steady solutions of ventilated cavities have been obtained to establish the validation of the approach around a 3D axisymmetric body. The influence of ventilation rate was investigated on the shape and hydrodynamic characteristic of ventilated cavities. The results of simulation indicated that it is important for achieving a steady a supercavity to determine a reasonable gas supply rate.

关 键 词：Mixture多相流 通气空泡 自然空泡 减阻 

分 类 号：O359[理学—流体力学]