基于代理模型的轴流式喷水推进泵优化设计  

Optimization Design of Waterjet Axial-Pump Based on Surrogate Method

作　　者：肖蕾 张孟杰 吴钦[1] 刘影[1] 王国玉[1] XIAO Lei;ZHANG Meng-jie;WU Qin;LIU Ying;WANG Guo-yu(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《北京理工大学学报》2018年第A01期63-66,共4页Transactions of Beijing Institute of Technology

摘　　要：基于代理模型的敏感度分析以及预测方法,对喷水推进轴流泵叶片结构参数进行了优化设计研究,选取叶轮叶片和导叶叶片的安放角作为优化参数,选择效率、扬程作为优化设计的目标函数;针对优化结果,采用数值模拟的方法进行了外特性以及空化性能对比分析.结果表明:导叶叶片安放角对喷水推进轴流泵性能影响较小,叶轮叶片安放角是影响喷水推进轴流泵性能的主要因素;优化后喷水推进轴流泵的外特性以及空化性能均得到提升,效率提高了3.5%.同时,结果表明代理模型优化设计方法可以较好的适用于喷水推进轴流泵的优化设计.A parameter optimization method was proposed for waterjet axial pump blade design based on the global sensitivity analysis and prediction method of surrogate model.Taking the fixed blade angles in impeller and guide vane as the optimization parameters,and taking waterjet pump efficiency and raise range as the optimization objective,the energy and cavitation performances of the axial pump were simulated and analyzed.The simulation results show that,the fixed blade angle in the impeller has a greater influence on the pump performances than that in the guide vane.The optimization method can well improve the axial pump performances,in both efficiency and cavitation performance,being suitable for the waterjet axial-pump design.

关 键 词：代理模型 喷水推进轴流泵 优化设计 外特性 

分 类 号：TK733.3[交通运输工程—轮机工程]