跨超音速射弹的超空泡数值模拟  

The Numerical Simulation of Supercavitation Around Projectiles from Subsonic to Supersonic

作　　者：张鹏[1] 傅慧萍[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200030

出　　处：《弹箭与制导学报》2009年第5期166-169,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(10602037)资助

摘　　要：使用Fluent6.3的UDF功能,研究了射弹在水中跨超音速下产生的超空泡流场。在Mixture模型下分别计算了水不可压和可压两种状态下超空泡射弹的流场,对两种状态下流场做了对比分析,表明在跨超音速下,水的可压缩性会增加射弹的阻力;另外,模拟了可压单相流的射弹流场,得出射弹周围温度场的分布,结果表明射弹运行的结果会产生大量的热;最后将Fluent6.3的计算结果同Fluent6.2的计算结果做出对比。The flow field of supercavitating projectile from subsonic to supersonic underwater was simulated numerically. Based on the mixture model and user defined function in general CFD code Fluent6.3, incompressible and compressible multiphase flows around projectiles were computed and analyzed comprehensively. Then, the flow field of single compressible flow with temperature was computed. Finally, the comparison is made between Fluent6.3 and Fluent6.2. The results show that the compressibility of water can increase drag of projectile and generate a lot of heat, and the computed thermal phenomenon is consistent with some experimental observation. The research is featured with significant referential value for projectile design and motion analysis.

关 键 词：超空泡 射弹 跨超音速 

分 类 号：O351.3[理学—流体力学]