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Noise radiation from small steps and cubic roughness elements in turbulent boundary layer flow
| Title: | Noise radiation from small steps and cubic roughness elements in turbulent boundary layer flow. |
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| Name(s): |
Bryan, Benjamin Skyler College of Engineering and Computer Science Department of Ocean and Mechanical Engineering |
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| Type of Resource: | text | |
| Genre: | Electronic Thesis Or Dissertation | |
| Date Issued: | 2012 | |
| Publisher: | Florida Atlantic University | |
| Physical Form: | electronic | |
| Extent: | ix, 104 p. : ill. (some col.) | |
| Language(s): | English | |
| Summary: | Ji and Wang (2010) propose that the dominant source of sound from a forward facing step is the stream wise dipole on the face of the step and that sources acting normal to the flow are negligible. Sound radiation normal to flow of forward facing steps has been measured in wind tunnel experiments previously by Farabee and Casarella (1986, 1991) and Catlett (2010). A method for evaluating sound radiation from surface roughness proposed in Glegg and Devenport (2009) has been adapted and applied to flow over a forward facing step which addresses the sound normal to the flow that was previously unaccounted for. Far-field radiation predictions based on this method have been compared with wind tunnel measurements and show good agreement. A second method which evaluates the forcing from a vortex convected past surface roughness using RANS calculations and potential flow information is also evaluated. | |
| Identifier: | 827937015 (oclc), 3358330 (digitool), FADT3358330 (IID), fau:4015 (fedora) | |
| Note(s): |
by Benjamin Skyler Bryan. Thesis (M.S.C.S.)--Florida Atlantic University, 2012. Includes bibliography. Mode of access: World Wide Web. System requirements: Adobe Reader. |
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| Subject(s): |
Turbulence -- Mathematical models Aerodynamic noise Fluid-structure interaction Structural dynamics Acoustic models Computational fluid dynamcs |
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| Persistent Link to This Record: | http://purl.flvc.org/FAU/3358330 | |
| Use and Reproduction: | http://rightsstatements.org/vocab/InC/1.0/ | |
| Host Institution: | FAU |
