Multi-fluid stratified shear flows in pipes. Part 1. Uniform flow solutions

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dc.contributor.author Mutti, M.
dc.contributor.author Paoletti, A.
dc.date.accessioned 2015-06-11T10:54:59Z
dc.date.available 2015-06-11T10:54:59Z
dc.date.issued 2007
dc.description.abstract Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007. en_ZA
dc.description.abstract The focus of this paper is on mathematical formulation and computation of uniform flow solutions in horizontal or nearly horizontal pipes. Continuity and momentum equations are derived considering an arbitrary number of fluids. Closure relationships are introduced and complete definitions of hydraulic diameters are given for co-current and countercurrent flows. A numerical procedure to compute phase holdups and pressure gradients is outlined. The iterative and direct method is shown to be robust and not limited by the choice of the friction factor correlations needed to define shear stresses. Uniform flow equations are linearized so that Newton’s methods can be applied in the search for solutions. It is given evidence that the Jacobian matrix of the shear stress functions can be used as a measure of the flow stability. en_ZA
dc.format.extent 6 pages en_ZA
dc.format.medium PDF en_ZA
dc.identifier.citation Mutti, M & Paoletti, A 2007, 'Multi-fluid stratified shear flows in pipes, Part 1: Uniform flow solutions', Paper presented to the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July 2007. en_ZA
dc.identifier.isbn 9781868546435
dc.identifier.uri http://hdl.handle.net/2263/45470
dc.language.iso en en_ZA
dc.publisher International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics en_ZA
dc.relation.ispartof HEFAT 2007
dc.rights University of Pretoria en_ZA
dc.rights.uri University of Pretoria en_US
dc.subject Uniform flow solutions en_ZA
dc.subject Flow stability en_ZA
dc.subject Shear stress in pipes en_ZA
dc.title Multi-fluid stratified shear flows in pipes. Part 1. Uniform flow solutions en_ZA
dc.type Presentation en_ZA


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