Boundary-layer analysis and measurement of Newtonian and non-Newtonian fluids

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dc.contributor.authorKim, Byung Kyuen
dc.contributor.committeecochairTelionis, Demetri P.en
dc.contributor.committeecochairCramer, Mark S.en
dc.contributor.committeememberBurton, Larry C.en
dc.contributor.committeememberDiller, Thomas E.en
dc.contributor.committeememberBaird, Donald G.en
dc.contributor.committeememberReifsnider, Kenneth L.en
dc.contributor.committeememberMcGrath, James E.en
dc.contributor.departmentMaterials Engineering Scienceen
dc.date.accessioned2020-11-05T00:00:34Zen
dc.date.available2020-11-05T00:00:34Zen
dc.date.issued1984en
dc.description.abstractThe velocity fields around a circular cylinder in a crossflow of drag-reducing polymeric solutions and water were experimentally investigated using a laser-Doppler velocimeter. Measured boundary-layer velocity profiles indicated that the flow parameter controlling the drag on a bluff body in drag-reducing flows is the turbulence intensity rather than the Reynolds number. For turbulence intensity less than 0.7% polymer addition induced delayed separation. For turbulence intensity over 1% the opposite effect was true. Time-averaged velocity profiles of water did not show any significant difference between self-induced and forced oscillatory flows. Heat, mass and momentum transfer of Newtonian and power-law non-Newtonian fluids were theoretically investigated using an implicit finite-difference scheme. The results clearly· indicated that shear-dependent non-Newtonian viscosity controls the entire transport processes of the power-law fluids. For the major portion of the boundary layer, it was found that the more shear thinning the material exhibits, the lower the skin friction and the higher the heat transfer result. Accounting for the motion of the stagnation point provided an improved prediction of heat transfer for Newtonian fluid.en
dc.description.degreeDoctor of Philosophyen
dc.format.extentxvi, 203 leaves : illustrations ; 28 cmen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/100792en
dc.language.isoenen
dc.language.isoenen
dc.relation.haspartLD5655.V856 1984.K54en
dc.relation.isformatofOCLC# 12389437en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectBoundary layeren
dc.subjectNewtonian fluidsen
dc.subjectNon-Newtonian fluidsen
dc.subjectFluid dynamic measurementsen
dc.subjectAcademic thesesen
dc.subject.lccLD5655.V856 1984.K54en
dc.titleBoundary-layer analysis and measurement of Newtonian and non-Newtonian fluidsen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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