高速水下航行器低比转速轴流推进泵设计方法  

Design Method for Low Specific Speed Axial Flow Pump for High-Speed Undersea Vehicles

作　　者：张子若 罗凯[1] 秦侃[1] ZHANG Ziruo;LUO Kai;QIN Kan(Marine Science and Technology,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《水下无人系统学报》2024年第1期130-138,共9页Journal of Unmanned Undersea Systems

摘　　要：对于水下航行器轴流泵喷水推进系统,现有升力法设计的高比转速轴流泵无法满足在浅水高速工况下正常工作的需求,为解决这一问题,提出一种针对低比转速轴流泵的设计方法。考虑所选NACA66_(a=0.8)翼型的叶栅特性,通过改变攻角和升力系数等参数的设计关系,建立适用于高航速工况的轴流泵模型,并运用SST k-ω湍流模型和多重参考系模型对设计泵的流场运动情况进行仿真。结果表明:设计工况下,设计泵的扬程和水力效率与设计值误差均控制在8%以内,同时测试了设计泵在不同水深下的抗空化性能,进一步探索设计泵工作的最小航深。For the axial flow pumps water-jet propulsion system of undersea vehicles,the high specific speed axial flow pump designed by the lift method fails to work under shallow water and high-speed conditions at present.Therefore,this study put forward a method to design a low specific speed axial flow pump.By considering the blade grid characteristics of the NACA66_(a=0.8) airfoil,the design relationship among the angle of attack,lift coefficient,and other parameters was changed to establish an axial flow pump model suitable for high-speed conditions,and SST k-ωturbulence model and multi-reference frame model were used to simulate the flow field motion of the designed pump.The results show that under the design conditions,for the head and hydraulic efficiency of the designed pump,the error between the design value and the emulation value is controlled within 8%.At the same time,the cavitation resistance of the designed pump at different depths is tested to explore the minimum depth where the designed pump can work.

关 键 词：高速水下航行器 轴流泵 浅水 喷水推进 

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]