Effective medium model for flow through beds of porous cylindrical fibres
We have used effective medium model for beds of circular cylindrical porous fibres in order to estimate the overall bed permeability (OBP). It is assumed that a representative circular porous cylindrical fibre is inside a fluid envelope beyond which effective medium is used. Both inside the cylindrical fibre and in the effective medium, Brinkman equation is used, however of different permeabilities and in the fluid envelope Stokes equation is used. The OBP corresponding to the porous fibres is estimated when the flow direction is perpendicular to the axis of the cylindrical fibres as well as parallel to the fibres. This in turn is used to estimate the OBP corresponding to a collection of porous cylindrical fibres that are randomly oriented. We have compared the results with some existing literature.
Keywords: Brinkman equation; Stokes flow; cylindrical porous fibres; effective medium; overall bed permeability
Document Type: Research Article
Affiliations: Institut fur Angewandte Analysis und Numerische Simulation, Universitat Stuttgart, 70569 Stuttgart, Germany,Department of Mathematics, Indian Institute of Technology Kharagpur, Kharagpur 721 302, India
Publication date: 01 June 2010
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