Simulations and measurements of automotive turbocharger compressor whoosh noise

被引：38

作者：

Broatch, A. ^{[1
]}

Galindo, J. ^{[1
]}

Navarro, R. ^{[1
]}

Garcia-Tiscar, J. ^{[1
]}

Daglish, A. ^{[2
]}

Sharma, R. K. ^{[2
]}

机构：

[1] Univ Politecn Valencia, CMT Motores Term, Valencia 46022, Spain

[2] Jaguar Land Rover Ltd, Coventry CV3 4LF, W Midlands, England

来源：

ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS | 2015年 / 9卷 / 01期

关键词：

CFD; aeroacoustics; rotating stall; centrifugal compressor; DES; CENTRIFUGAL COMPRESSORS; GENERATION; OPTIMIZATION; FLOW;

D O I：

10.1080/19942060.2015.1004788

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Turbocharger noise has become a major concern in downsized automotive engine development. In this paper, the analysis is focused on the whoosh noise produced by the compressor when it is working near surge. A centrifugal compressor has been acoustically characterized on a turbocharger test rig mounted on an anechoic chamber. Three in-duct pressure signals forming a linear array are registered in order to obtain pressure components. In this way, meaningful pressure spectra and sound intensity level (SIL) compressor maps are obtained, showing an increase of SIL in the frequency window corresponding to whoosh noise. Besides, detached eddy simulations (DES) of the centrifugal compressor flow in two operating conditions near surge are performed. Good agreement is found between the experimental measurements and the CFD solutions in terms of predicted pressure spectra. Flow analysis is used to identify patterns responsible for the different features of the pressure spectra. At the simulated conditions, rotating instabilities in the compressor diffuser and inducer cause pressure oscillations in the frequency range of whoosh noise.

引用

页码：12 / 20

页数：9

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