A computational study of the effect of windscreen shape and flow resistivity on turbulent wind noise reduction

	A computational study of the effect of windscreen shape and flow resistivity on turbulent wind noise reduction
	Xu Y; Zheng ZC; Wilson DK
刊名	Journal of The Acoustical Society of America
	2011
通讯作者邮箱	zzheng@ku.edu
卷号	129 期号:4 页码:1740-1747
关键词	Finite-Difference Schemes Implementation Fluctuations Mechanisms Simulation Surfaces
ISSN号	0001-4966
通讯作者	Zheng, ZC (reprint author), Univ Kansas, Dept Aerosp Engn, Lawrence, KS 66045 USA
产权排序	[Zheng, ZC] Univ Kansas, Dept Aerosp Engn, Lawrence, KS 66045 USA; [Xu, Ying] Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China; [Wilson, DK] USA, Cold Reg Res & Engn Lab, Engn Res & Dev Ctr, Hanover, NH 03755 USA
合作状况	国际
中文摘要	In this paper, numerical simulations are used to study the turbulent wind noise reduction effect of microphone windscreens with varying shapes and flow resistivities. Typical windscreen shapes consisting of circular, elliptical, and rectangular cylinders are investigated. A turbulent environment is generated by placing a solid circular cylinder upstream of the microphone. An immersed-boundary method with a fifth-order weighted essentially non-oscillatory scheme is implemented to enhance the simulation accuracy for high-Reynolds number flow around the solid cylinder as well as at the interface between the open air and the porous material comprising the windscreen. The Navier-Stokes equations for incompressible flow are solved in the open air. For the flow inside the porous material, a modified form of the Zwikker-Kosten equation is solved. The results show that, on average, the circular and horizontal ellipse windscreens have similar overall wind noise reduction performance, while the horizontal ellipse windscreen with medium flow resistivity provides the most effective wind noise reduction among all the considered cases. The vertical ellipse windscreen with high flow resistivity, in particular, increases the wind noise because of increased self-generation of turbulence. (C) 2011 Acoustical Society of America. [DOI:10.1121/1.3552886]
学科主题	Acoustics
分类号	二类/Q2
类目[WOS]	Acoustics ; Audiology & Speech-Language Pathology
研究领域[WOS]	Acoustics ; Audiology & Speech-Language Pathology
关键词[WOS]	FINITE-DIFFERENCE ; SCHEMES ; IMPLEMENTATION ; FLUCTUATIONS ; MECHANISMS ; SIMULATION ; SURFACES
收录类别	SCI ; EI
资助信息	This research was partly supported by the U.S. Army Engineering Research and Development Center under contract W913E7-07-C-0004 when the first two authors were at Kansas State University.
原文出处	http://dx.doi.org/10.1121/1.3552886
语种	英语
WOS记录号	WOS:000289298600017
公开日期	2012-04-01
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/45091]
专题	力学研究所_国家微重力实验室
推荐引用方式 GB/T 7714	Xu Y,Zheng ZC,Wilson DK. A computational study of the effect of windscreen shape and flow resistivity on turbulent wind noise reduction[J]. Journal of The Acoustical Society of America,2011,129(4):1740-1747.
APA	Xu Y,Zheng ZC,&Wilson DK.(2011).A computational study of the effect of windscreen shape and flow resistivity on turbulent wind noise reduction.Journal of The Acoustical Society of America,129(4),1740-1747.
MLA	Xu Y,et al."A computational study of the effect of windscreen shape and flow resistivity on turbulent wind noise reduction".Journal of The Acoustical Society of America 129.4(2011):1740-1747.