基于伴随优化方法的离心式压缩机回流通道子午面型线的优化设计  

Optimization Design of Return of Channel Meridian Profile of Centrifugal Compressor Based on the Adjoint Method

作　　者：邵伟龙 周玙 任霁筇 王国欣 郭伟 闻苏平[1] Wei-long Shao;Yu Zhou;Ji-qiong Ren;Guo-xin Wang;Wei Guo;Su-ping Wen(School of Energy and Power Engineering,Xi'an Jiaotong University;Shenyang Blower Works Group Corporation)

机构地区：[1]西安交通大学能源与动力工程学院 [2]沈阳鼓风机集团股份有限公司

出　　处：《风机技术》2020年第5期32-38,共7页Chinese Journal of Turbomachinery

基　　金：国家重点研发计划资助(2018YFB0606102)。

摘　　要：应用伴随优化方法,对基本级回流通道的子午型线进行了优化设计。将减小回流通道的总压损失系数K作为优化目标,经过伴随优化设计得到新的基本级子午型线。新子午型线结构使基本级在设计流量和小流量的气动性能有所提高,当流量系数φ1为0.04时,级多变效率ηpol提高了0.6%,级总压损失系数K降低了4.1%。数值分析回流通道内的流动发现,弯道部分的总压损失降低,流动均匀性提高。With the application of adjoint method,the optimization design of meridional profile of the return channel is accomplished.Taking the decrease of the total-pressure loss coefficient K as the optimization target,the new design of meridional profile of the return channel is obtained after the optimization calculation.With the new design of meridional profile,the performance of the basic stage is improved:the polytropic efficiencyηpol increases by 0.6%when flow coefficientφ1 is equal to 0.04,and the total-pressure loss coefficient K decreases by 4.1%as well.Analyzing the inner flow of the return channel,it can be discovered that,in the 180°bend,the loss of total pressure is reduced and the uniformity of the inner flow is improved.

关 键 词：离心压缩机 回流通道 伴随优化方法 数值模拟 

分 类 号：TH452[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]