离心式压气机的模化设计与分析  

The modeling design and analysis of centrifugal compressor

作　　者：孙涛[1] 张宏明 李良才 王忠义[1] 张国辉 宫妍 SUN Tao;ZHANG Hongming;LI Liangcai;WANG Zhongyi;ZHANG Guohui;GONG Yan(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;Dalian Shipbuilding Industry Co.,Ltd.,Dalian 116005,China;Beijing Research Institute of Automation for Machinery Industry Co.,Ltd.,Beijing 100120,China)

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001 [2]大连船舶重工集团有限公司,辽宁大连116005 [3]北京机械工业自动化研究所有限公司,北京100120

出　　处：《中国舰船研究》2020年第S01期141-148,共8页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51679051);黑龙江省优秀青年基金资助项目(YQ2019E015);中央高校基本科研业务费专项资金资助项目(HEUCFP201721)。

摘　　要：[目的]作为叶轮机械领域的研究热点,离心式压气机对燃气轮机总体性能的影响很大。为了在相对较少的试验工况下实现性能优良的新型压气机设计,可采用效率高、成本低的模化设计方法。[方法]以某型高性能离心式压气机为母型,基于相似原理模化设计压比为4.42,绝热效率为79.19%的新型压气机,并采用NUMECA系列软件对离心压气机进行网格划分和三维流场数值模拟,对比分析模化压气机与母型压气机在80%,90%,100%,110%转速工况下的主要性能参数。[结果]结果表明:在100%转速工况下,模化压气机的喘振裕度比母型压气机提高了5.48%,但在其他转速工况下均下降了1%左右;模化压气机的压比与绝热效率在小流量工况下相对于母型压气机略有提升,但在大流量工况下均明显下降。[结论]基于相似原理进行模化设计的新型压气机基本达到了母型压气机的总体性能水平,研究成果可为离心压气机的模化设计提供参考。[Objectives]As a hot topic in the field of turbomachinery,centrifugal compressor has a huge impact on gas turbine general performance.In order to achieve the new compressor design with excellent performance under relatively few test conditions,the high efficiency and low cost modeling design method can be adopted.[Methods]In this paper,a new centrifugal compressor based on similarity principles with pressure ratio of 4.42 and efficiency of 79.19%was designed by modeling a prototype of a high-performance centrifugal compressor.NUMECA software was used to mesh and simulate the three-dimensional flow field of the centrifugal compressor,and the new compressor's main performance parameters and those of the prototype were compared at 80%,90%,100%and 110%rotation speeds.[Results]The results showed that at rotation speed settings of under 100%,the new compressor's surge margin is 5.48%higher than the prototype,but reduced by 1%at other speed settings.The new compressor's pressure ratio and efficiency are slightly improved at low flow conditions when compared to the prototype.However,at high flow conditions,the pressure ratio and efficiency of both compressors are significantly reduced.[Conclusions]The numerical simulation results show that the general performance of the new compressor has reached the performance level of the prototype compressor.The research results can be used as a reference for the modeling design of a centrifugal compressor.

关 键 词：离心式压气机 模化设计 相似原理 叶尖间隙流 尾缘涡 

分 类 号：U664.131[交通运输工程—船舶及航道工程]