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ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508
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NON-AXISYMMETRIC STAGNATION-POINT FLOW IN A FLUID SATURATED POROUS MEDIUM
ABSTRAKT
A modification of axisymmetric outer potential stagnation-point flow of strain rate a in a porous medium is obtained by adding periodic radial and azimuthal velocities of the form br sin 20 and b r cos 20, respectively, where b is a shear rate. This leads to the discovery of a new family of asymmetric stagnation-point flows depending on two parameters, namely the shear-to-strain-rate ratio γ and the porous media parameter σ. Numerical solutions for the wall shear stress parameters and the displacement thicknesses are given and compared with their large-γ asymptotic behaviors. Sample similarity velocity profiles are also presented.
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