基于响应面法的诱导轮多参数水力优化  

Multi-parameter hydraulic optimization of inducer based on response surface method

作　　者：黄锡龙 杨宝锋 严俊峰[1] 李春乐[1] 许开富[1] HUANG Xilong;YANG Baofeng;YAN Junfeng;LI Chunle;XU Kaifu(Xi'an Aerospace Propulsion Institute,Xi'an 710100,China)

机构地区：[1]西安航天动力研究所,陕西西安710100

出　　处：《火箭推进》2023年第5期73-80,共8页Journal of Rocket Propulsion

基　　金：国家重大基础研究项目(613321)。

摘　　要：为提高预压泵的水力性能,通过响应面法对高速预压泵的诱导轮进行了多参数水力优化。选取叶片倾角、入口安放角、出口安放角、分流叶片轴向位置、入口轮毂直径和出口轮毂直径这6个结构参数作为影响因素,基于中心复合有界设计原理设计了78组诱导轮方案,并通过数值仿真获得78组诱导轮的扬程和效率。对计算结果进行极差分析,获得各影响因素对诱导轮扬程和效率的影响。结果表明:出口安放角和出口轮毂直径对诱导轮的扬程影响较大,分流叶片轴向位置和入口轮毂直径对扬程的影响较小;入口安放角对效率的影响最大,出口轮毂直径对效率的影响最小。通过线性回归分别得到扬程系数和效率的响应面模型,以效率大于60%作为约束条件,利用罚函数法对扬程进行寻优,使诱导轮扬程提升15.4%。In order to improve the hydraulic performance of prepressurizing turbopumps,the multi-parameter hydraulic optimization of the inducer was carried out by the response surface method.Six inducer's structural parameters including blade inclination angle,inlet blade angle,outlet blade angle,axial position of splitting vanes,inlet and outlet hub diameters were selected as influencing factors.78 sets of inducer schemes were designed according to the principle of central composite inscribed design.The head and efficiency of 78 sets of inducers were obtained by numerical simulation.The effects of influence factors on the head and efficiency of inducers were obtained by range analysis of calculation results.The results show that outlet blade angle and outlet hub diameter have more influence on the head of the inducer.Axial position of splitting vanes and inlet hub diameter have little influence on the head.Inlet blade angle has the greatest influence on the efficiency of inducer.Outlet hub diameter has the least influence on the efficiency.The response surface models of head coefficient and efficiency were obtained respectively by linear regression.With the efficiency greater than 60 as the constraint condition,the penalty function method was used to optimize the head of inducer.The results show that the head of the optimized inducer is improved by 15.4.

关 键 词：诱导轮 多参数 响应面法 罚函数法 水力优化 

分 类 号：V434.21[航空宇航科学与技术—航空宇航推进理论与工程]