Numerical study of Aeroacoustic sources generated from the wake behind the car

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dc.contributor.authorNagawkar, Barlev
dc.contributor.departmentChalmers tekniska högskola / Institutionen för tillämpad mekaniksv
dc.contributor.departmentChalmers University of Technology / Department of Applied Mechanicsen
dc.date.accessioned2019-07-03T14:20:39Z
dc.date.available2019-07-03T14:20:39Z
dc.date.issued2016
dc.description.abstractDue to new legislative and consumer demands Europe’s major vehicle manufactures (Original Equipment Manufacturer, OEMs) are forced to make big investments in the area of aeroacoustics. To measure a small noise contribution in wind tunnels is a challenge. Do to uncertainties of physical testing, the importance of using numerical methods for aeroacoustics has gone up. In this thesis an aeroacoustics study is performed on generic bodies with a focus on the wake. Three types of Ahmed bodies are used namely, the slant or fast back, the square or bus back and the notch or sedan back. The geometries being different in the rear will generate different wake structures and difference in noise levels obtained from these are analysed. An hybrid computational aeroacoustic method is adopted where first Large Eddy Simulations (LES) are done using AVL Fire to simulate the flow field. The sound propagation is then solved by using the Curle acoustic analogy.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/242130
dc.language.isoeng
dc.relation.ispartofseriesDiploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden : 2016:70
dc.setspec.uppsokTechnology
dc.subjectStrömningsmekanik och akustik
dc.subjectHållbar utveckling
dc.subjectTransport
dc.subjectFluid Mechanics and Acoustics
dc.subjectSustainable Development
dc.subjectTransport
dc.titleNumerical study of Aeroacoustic sources generated from the wake behind the car
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeApplied mechanics (MPAME), MSc
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