首页|期刊导航|热科学学报（英文版）|Aerodynamic Performance and Noise Characteristics of a Centrifugal Compressor with Modified Vaned Diffusers
热科学学报（英文版）2006，Vol.15Issue(4)：289-295,7.
Aerodynamic Performance and Noise Characteristics of a Centrifugal Compressor with Modified Vaned Diffusers
Aerodynamic Performance and Noise Characteristics of a Centrifugal Compressor with Modified Vaned Diffusers
摘要
Abstract
Improvement of aerodynamic performance and reduction of interaction tone noise of a centrifugal compressor with vaned diffusers are discussed by experiments and visualization techniques using a colored oil-film method.The focus of the research is concentrated on the leading edge shape of diffuser vanes that are deeply related to the generation mechanism of the interaction tone noise.The compressor-radiated noise can be reduced by more than ten decibels by using modified diffuser vanes which have 3-D tapered shapes on both pressure and suction surfaces of the leading edge.Furthermore,by adopting the proposed modified diffuser vanes,the secondary flow which is considered to be an obstruction of diffuser pressure recovery can be suppressed,and also the pressure decrease observed in the throat part of the diffuser flow passage is reducible.Thus,the proposed diffuser vanes show a favorable result for both noise and the aerodynamic performance of the centrifugal compressor,and offer a few basic guidelines for the diffuser vane design.关键词
centrifugal compressor/vaned diffuser/tapered diffuser vanes/noise reductionKey words
centrifugal compressor/vaned diffuser/tapered diffuser vanes/noise reduction分类
能源科技引用本文复制引用
Yutaka OHTA,Yasuhiko OKUTSU,Takashi GOTO,Eisuke OUTA..Aerodynamic Performance and Noise Characteristics of a Centrifugal Compressor with Modified Vaned Diffusers[J].热科学学报（英文版）,2006,15(4):289-295,7.基金项目
This investigation was supported by a Grant-in-Aid for Scientific Research through grant number 17560162 from Japanese Society for the Promotion of Science. （）
