Compressible flows of dense gases in boundary layers

dc.contributor.authorWhitlock, Sarah Turneren
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:31:20Zen
dc.date.adate2009-03-12en
dc.date.available2014-03-14T21:31:20Zen
dc.date.issued1992en
dc.date.rdate2009-03-12en
dc.date.sdate2009-03-12en
dc.description.abstractThe equations and numerics necessary for the analysis of dense-gas boundary-layer flows over arbitrarily shaped two-dimensional bodies are developed. The governing equations are derived from the Navier-Stokes-Fourier equations for a general fluid. A numerical method based on the second-order Davis-coupled scheme is employed to solve for mean flows over flat plates. Flows of nitrogen, sulfur hexafluoride, and toluene over adiabatic walls are examined; in addition, flows of nitrogen over heated and cooled walls are studied. Results indicate a breakdown of the standard correlations for the recovery factor and the Nusselt number due primarily to the substantial variations of the Prandtl number and the Chapman-Rubesin parameter throughout the boundary layer. The stability equations for two-dimensional inviscid disturbances in a general fluid are derived. The temporal stability of the mean flows of nitrogen is subsequently examined using the generalized inflection-point criterion extracted from these equations. Results reveal significant variations from standard ideal-gas predictions including the existence of flows for which neither heating nor cooling of the wall has a stabilizing effect.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 138 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03122009-041304en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03122009-041304/en
dc.identifier.urihttp://hdl.handle.net/10919/41499en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1992.W54.pdfen
dc.relation.isformatofOCLC# 26812925en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1992.W54en
dc.subject.lcshBoundary layeren
dc.subject.lcshGases, Compresseden
dc.titleCompressible flows of dense gases in boundary layersen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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