轮毂比对水下航行器高速泵喷推进器性能影响研究  

Effect of Hub-to-tip Ratio on Performance of High Speed Pump-jet Propulsor for Undersea Vehicle

作　　者：甘工昌 GAN Gongchang(The 705 Research Institute,China State Shipbuilding Corporation Limited,Xi’an 710077,China)

机构地区：[1]中国船舶集团有限公司第七〇五研究所,陕西西安710077

出　　处：《水下无人系统学报》2024年第6期1123-1130,共8页Journal of Unmanned Undersea Systems

基　　金：国防基础加强重点项目.

摘　　要：为了探究轮毂比对水下航行器高速泵喷推进器的影响,以比转速1920的叶轮为研究对象,对水下航行器高速泵喷推进器3种不同的轮毂比开展数值计算、性能结果分析比对和试验验证。应用Fluent软件,采用基于雷诺平均N-S方程和SST k-ω模型,预测叶轮的扬程、效率及推力。通过数值仿真计算,得到不同轮毂比叶轮的性能曲线、空化性能数据及内流场状态。结果表明:叶片表面从叶梢到轮缘的压力梯度逐渐变小,随着轮毂比的增大,叶片上最大静压下降,泵喷推进器的扬程和效率均有所降低,且空化性能下降明显,但在空化状态上优于小轮毂比。研究结果可为水下航行器高速泵喷推进器结构优化设计提供参考。To investigate the influence of the hub-to-tip ratio on the high-speed pump-jet propulsors of undersea vehicles,this study took an impeller with specific speed of 1920 as the research object and conducted numerical calculation,performance result analysis and comparison,and experimental verification of three different hub-to-tip ratios of a high-speed pump-jet propulsor for undersea vehicles.Using Fluent software,it adopted a Reynolds-averaged N-S equation and an shear stress transport k-ωmodel to predict the head,efficiency,and thrust of the impeller.The performance curves,cavitation performance data,and internal flow field conditions of the impeller under different hub-to-tip ratios were obtained through numerical simulation calculations.The results show that the pressure gradient on the blade surface from the blade tip to the rim decreases.With the increase in the hub-to-tip ratio,the maximum static pressure on the blade and the head and efficiency of the pump-jet propulsor all decrease,and the cavitation performance significantly declines.However,the cavitation state is superior to that at the small hub-to-tip ratio.The research findings can provide certain reference for the structure optimization design of high-speed pump-jet propulsors for undersea vehicles.

关 键 词：水下航行器 轮毂比 泵喷推进器 空化 

分 类 号：TJ630.33[兵器科学与技术—武器系统与运用工程] U664.34[交通运输工程—船舶及航道工程]