Influence of volute distortion on the performance of turbocharger centrifugal compressor with vane diffuser

作     者：ZHENG XinQian JIN Lei TAMAKI Hideaki 

作者机构：State Key Laboratory of Automotive Safety and EnergyTsinghua University Turbo Machinery and Engine Technology DepartmentIHI Corporation 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2013年第56卷第11期

页      面：2778-2786页

核心收录：

学科分类：080703[工学-动力机械及工程] 080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51176087) 

主　　题：turbocharger vane diffuser centrifugal compressor stability distortion 

摘      要：As the geometry of the volute of turbocharger compressor is non-axisymmetric,it causes a distortion at the outlet of the diffuser and influences the upstream components.A distortion model in which a pressure distortion was applied as outlet boundary condition was established to simulate the distortion induced by the *** turned out to be sufficient to impose a circumferentially asymmetric pressure distribution at the outlet of the diffuser to replace the *** on the distortion model which was verified,the influence of the amplitude of the distortion on the performance of centrifugal compressor was studied in *** results show that the distortion severely harms aerodynamic stability of the investigated *** larger the amplitude of the distortion,the worse the performance of the *** distortion induced by asymmetric volute propagates to upstream components and causes local flow separation at part of diffuser and impeller,and then causes the compressor *** the amplitude of the volute distortion is 10%,the stable flow range of the centrifugal compressor decreases to near *** authors’knowledge,the relationship between the compressor performance and distortion amplitude is first obtained quantitatively,which provides evidence to improve the performance of turbocharger compressor by decreasing the distortion induced by asymmetric volute.