离心泵蜗壳拓扑优化设计方法研究  

Research on topology optimization design method of centrifugal pump volute

作　　者：徐胜利[1] 张辉 金婷婷 杨成立 周演 XU Shengli;ZHANG Hui;JIN Tingting;YANG Chengli;ZHOU Yan(School of Energy and Power, Dalian University of Technology, Dalian, Liaoning 116024, China;Shanghai Electric Gas Turbine Co.,Ltd., Shanghai 200240, China;Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, China)

机构地区：[1]大连理工大学能源与动力学院,辽宁大连116024 [2]上海电气燃气轮机有限公司,上海200240 [3]大连理工大学工程力学系,辽宁大连116024

出　　处：《排灌机械工程学报》2022年第2期115-121,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家重点研发计划项目(2018YFB0606104);国家自然科学基金资助项目(51875077)。

摘　　要：为了提高离心泵的水力性能,采用拓扑优化方法对离心泵蜗壳进行拓扑优化设计,建立了优化数学模型,优化目标函数为最小化流体的总压损失,约束条件为流体域的体积约束.基于OpenFOAM,编制了优化问题分析和求解程序,通过连续伴随法求得目标函数对设计变量的灵敏度,采用移动渐近线法(MMA)求解优化问题.二维蜗壳优化结果表明,提出的蜗壳拓扑优化方法能够获得蜗壳优化设计方案,得出的蜗壳结构与用传统设计方法设计出的蜗壳结构十分接近,且拓扑优化方法下的蜗壳流场内总压损失更小,特别是在传统蜗壳设计方法不适用的情况下,该方法能够自动获得蜗壳构型.研究结果对于拓展离心泵优化设计方案具有一定的借鉴价值.In order to improve the hydraulic performance of centrifugal pump,the topology optimization method was used to optimize and design the centrifugal pump volute.The mathematical model of optimization was established and its objective function was to minimize the total pressure loss of the fluid and the constraint was the volume constraint of the fluid domain.An analytical and solving program for optimization problems was compiled based on OpenFOAM.The sensitivity of the objective function to the design variables was calculated by the continuous adjoint method.The method of moving asymptotes(MMA)was used to solve the optimization problem.The results of two-dimensional volute optimization show that the topology optimization method of volute proposed can obtain an optimized design scheme of volute,the optimized volute structure is very close to that designed by the traditional design method,and the total pressure loss in the flow field of the volute under the topology optimization method is smaller.In addition when the traditional volute design method is not applicable,this method can automatically obtain the volute configuration.The research results have a certain reference value for expanding the optimization design scheme of centrifugal pump.

关 键 词：离心泵蜗壳 拓扑优化 设计方法 OPENFOAM 连续伴随法 

分 类 号：TK72[动力工程及工程热物理—流体机械及工程]