An abstract model for flow of a two-phase viscoelastic fluid in a tube

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dc.creatorDeshpande, Vasanti Anant
dc.date.accessioned2016-11-14T23:27:20Z
dc.date.available2011-02-18T22:03:15Z
dc.date.available2016-11-14T23:27:20Z
dc.date.issued1985-12
dc.degree.departmentChemical Engineeringen_US
dc.description.abstractA phenomenological model has been developed to predict the time-dependent flow behavior of a suspension of solid particles in viscoelastic fluid. The model consists of a Maxwell model in parallel with a plastic model, which has a yield stress parameter Y. The effect of the solid particles is studied by introducing a function f(φ), where φ is the volume fraction of the solid in the viscoelastic fluid. Einstein's, Mooney's and Simha's models, which are good for suspensions of rigid spheres in Newtonian fluids, are used for f(t) to examine the effect of <> on the velocity profiles in tube flow. The volume fraction was varied from 0 to 307. An explicit finite difference method is used to solve the integrodifferential equation for viscosities up to 5.0 poise, and relaxation times between 1 and 5 seconds. Pressure drops are calculated using the average velocity obtained from the computed velocity profiles. Limitations of the numerical method and the simple rheological model are discussed and recommendations for the future have been made.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2346/17466en_US
dc.language.isoeng
dc.publisherTexas Tech Universityen_US
dc.rights.availabilityUnrestricted.
dc.subjectTubes -- Fluid dynamicsen_US
dc.subjectTwo-phase flow -- Mathematical modelsen_US
dc.subjectRheologyen_US
dc.subjectSuspensions (Chemistry)en_US
dc.subjectViscoelasticityen_US
dc.titleAn abstract model for flow of a two-phase viscoelastic fluid in a tube
dc.typeDissertation

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