On the modeling of non-Newtonian purely viscous flow through high porosity synthetic foams |
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Authors: | G.J.F. Smit J.P. du Plessis J.M. Wilms |
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Affiliation: | Department of Applied Mathematics, University of Stellenbosch, Private Bag X1, 7602 Matieland, South Africa |
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Abstract: | In a previous paper a model was proposed for the prediction of non-Newtonian, purely viscous flow, through isotropic high porosity synthetic foams. However, based on work done for creep flow of a Newtonian fluid through two-dimensional arrays of squares, an adaptation to the existing model is discussed and a volumetric partitioning is proposed which facilitates the introduction of possible stagnant regions within the flow domain. Three models, for non-Newtonian purely viscous flow, were derived that allow for various staggering configuration, namely doubly, singly staggered and non-staggered configurations. Results from the proposed model for a doubly staggered configuration compared favorably to experimental pressure gradient data. |
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Keywords: | Non-Newtonian fluids Porous media Power law Pressure drop Metallic foams |
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