| A computational study of the effect of windscreen shape and flow resistivity on turbulent wind noise reduction | |
| Xu Y; Zheng ZC; Wilson DK; Zheng, ZC (reprint author), Univ Kansas, Dept Aerosp Engn, Lawrence, KS 66045 USA | |
| Source Publication | Journal of The Acoustical Society of America
 |
| 2011 | |
| Volume | 129Issue:4Pages:1740-1747 |
| ISSN | 0001-4966 |
| Abstract | 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] |
| Keyword | Finite-difference Schemes Implementation Fluctuations Mechanisms Simulation Surfaces |
| Subject Area | Acoustics |
| DOI | 10.1121/1.3552886 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000289298600017 |
| WOS Keyword | FINITE-DIFFERENCE ; SCHEMES ; IMPLEMENTATION ; FLUCTUATIONS ; MECHANISMS ; SIMULATION ; SURFACES |
| WOS Research Area | Acoustics ; Audiology & Speech-Language Pathology |
| WOS Subject | Acoustics ; Audiology & Speech-Language Pathology |
| Funding Organization | 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. |
| Department | 中科院国家微重力实验室 |
| Classification | 二类/Q2 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/45091 |
| Collection | 国家微重力实验室 |
| Corresponding Author | Zheng, ZC (reprint author), Univ Kansas, Dept Aerosp Engn, Lawrence, KS 66045 USA |
| Recommended Citation GB/T 7714 | Xu Y,Zheng ZC,Wilson DK,et al. 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,&Zheng, ZC .(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. |
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