A quantitative analysis of aerodynamic noise by sound sources from a nozzle inflow

被引：0

作者：

Lee, Kwongi ^{[1
]}

Cheong, Cheolung ^{[1
]}

Park, Kyeonghun ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, 2 Busandaehak Ro 63 Beon Gil, Busan 46241, South Korea

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF KOREA | 2022年 / 41卷 / 06期

关键词：

Sound source of nozzle internal flow; External radiated noise; Vortex sound source; Large Eddy Simulation (LES); VACUUM CLEANER; REDUCTION;

D O I：

10.7776/ASK.2022.41.6.698

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In this paper, the radiated aerodynamic noise generated from sound sources of a nozzle inflow is quantitatively investigated and compared with experimental results of externally radiated noise. A high-resolution unsteady compressible Large Eddy Simulation (LES) technique is used to accurately predict the internal and external flow of three types of nozzle shape. Through using the vortex sound source for sound sources, the geometry of nozzle neck is identified as most significant aerodynamic noise sources. For validation of quantitative analysis, the vortex sound source intensity of internal nozzle flow is compared with results of external radiated noise of calculation and experiment.

引用

页码：698 / 704

页数：7

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