{"title":"粘性流体介质中半平面声衍射的边界层分析","authors":"R. Nagem, G. Sandri","doi":"10.1115/imece2001/nca-23523","DOIUrl":null,"url":null,"abstract":"\n We investigate the effects of fluid viscosity on the diffraction of a time-harmonic acoustic plane wave by a semi-infinite half-plane. A boundary layer approximation based on a multiple scale expansion and the known inviscid diffraction solution is used to derive the velocity field near the surface of the half-plane. The boundary layer approximation is compared to an independent incompressible viscous flow solution that is derived for a small circular region in the neighborhood of the edge of the half-plane.","PeriodicalId":387882,"journal":{"name":"Noise Control and Acoustics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2001-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Boundary Layer Analysis of Acoustic Diffraction by a Half-Plane in a Viscous Fluid Medium\",\"authors\":\"R. Nagem, G. Sandri\",\"doi\":\"10.1115/imece2001/nca-23523\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n We investigate the effects of fluid viscosity on the diffraction of a time-harmonic acoustic plane wave by a semi-infinite half-plane. A boundary layer approximation based on a multiple scale expansion and the known inviscid diffraction solution is used to derive the velocity field near the surface of the half-plane. The boundary layer approximation is compared to an independent incompressible viscous flow solution that is derived for a small circular region in the neighborhood of the edge of the half-plane.\",\"PeriodicalId\":387882,\"journal\":{\"name\":\"Noise Control and Acoustics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-11-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Noise Control and Acoustics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1115/imece2001/nca-23523\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Noise Control and Acoustics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/imece2001/nca-23523","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Boundary Layer Analysis of Acoustic Diffraction by a Half-Plane in a Viscous Fluid Medium
We investigate the effects of fluid viscosity on the diffraction of a time-harmonic acoustic plane wave by a semi-infinite half-plane. A boundary layer approximation based on a multiple scale expansion and the known inviscid diffraction solution is used to derive the velocity field near the surface of the half-plane. The boundary layer approximation is compared to an independent incompressible viscous flow solution that is derived for a small circular region in the neighborhood of the edge of the half-plane.