【作者】 王建强； 万初瑞； 孔为平； 周昊； 丁举；

【Author】 WANG Jian-qiang;WAN Chu-rui;KONG Wei-ping;ZHOU Min;DING Ju;Marine Design & Research Institute of China;Laboratory of Science and Technology on Waterjet propulsion;Shanghai Jiao Tong University;

【机构】 中国船舶及海洋工程设计研究院； 喷水推进技术重点实验室； 上海交通大学；

【摘要】 本研究以某高速船的高负荷大侧斜系列螺旋桨为研究对象,开展了盘面比不同的3个螺旋桨推力下降性能的试验和数值计算研究。在空泡水筒中开展了固定空泡数下匀流场中推力下降螺旋桨模型试验,得到了相应的螺旋桨推力下降曲线,在伴流场中进行了空泡形态观察试验。应用商业软件StarCCM+,采用RANS方程中的SST模型,选择Schnerr&Sauer空化模型,计算了对应于模型试验的水速空泡数工况下匀流场螺旋桨水动力性能和伴流场中空泡形态。与试验结果相比,推力下降点计算结果偏差较小,得到的叶背片空泡的形态和位置与试验结果符合较好。不过对于靠近梢部的片空泡和梢涡空泡的形状捕捉,还有所欠缺。通过试验和数值计算研究,分析了系列螺旋桨推力下降点的变化趋势,探索了此类大侧斜螺旋桨发生推力下降现象与盘面比的变化关系,为螺旋桨设计优化提供了重要依据。更多还原

【Abstract】 In this paper thrust breakdown performances of high-skew propeller series are investigated based on numerical and experimental researches.Hydrodynamic performances of the uniform flow are researched in the cavitation tunnel.Also cavitation experiment under non-uniform inflow conditions are conducted to figure out the cavitation patterns.Corresponding to experiment researches,Hydrodynamic performances under uniform and uniform inflow based on SST model and Schnerr & Sauer cavitation model are simulated.The thrust breakdown point of numerical simulations shows great consistency compared with experimental results.Compared with experimental observations,the computational results closely reproduce the main features of sheet cavity patterns.The patterns of the tip vortex cavity in the numerical simulation are not very consistent with the ones of experimental results.Based on numerical and experimental researches,the relations between thrust breakdown performance and area ratio are investigated,which are valuable to propeller design and optimization.更多还原