入口唇角对喷水管道流动性能影响的数值分析

应用CFD技术对平进口式喷水推进系统的三维流动进行了数值模拟。从进水管道流动损失、出流品质和管内压力分布等方面性能出发,对比分析5种不同管道入口唇角线型方案对管道流动性能的影响。数值分析结果表明,进水管道入口唇角位置适当靠前且唇缘相对尖锐有利于改善进水管道的流动性能。

Numerical Study on Effect of Inlet Lip on Hydrodynamics for Waterjet Propulsion

Firstly,3-D flow fields in the inlet of flush-type waterjets are simulated with the method of CFD.Then,comparative analysis on flow characteristics,such as head loss,outflow quality,pressure distribution,etc,in the ducts with different lip linetypes are performed.Conclusions and suggestions for optimal waterjet inlet design are summarized.The numerical results show that the inlet lip with a little more forward position and sharper shape may be helpful for improving hydrodynamic performance in a waterjet inl...