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Effects of stagnant and dispersion conductivities on non‐darcian forced convection in square Packed‐Sphere channels
Author(s) -
Chou F. C.,
Chung P. Y.,
Cheng C. J.
Publication year - 1991
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450690624
Subject(s) - péclet number , nusselt number , dispersion (optics) , mechanics , square (algebra) , materials science , forced convection , convection , mixing (physics) , conductivity , volume fraction , thermodynamics , reynolds number , chemistry , physics , mathematics , turbulence , optics , geometry , quantum mechanics
This paper presents a numerical and experimental investigation of the effects of stagnant and dispersion conductivities on non‐Darcian forced convection in square packed‐sphere channels. The theoretical prediction of Nusselt number are found to be in good agreement with the experimental data. A larger near‐wall damping of stagnant conductivity is found for the present water‐steel medium than for that described by the mixing rule based on the volume fraction. A nonlinear Peclet number dependence, Pe λ and λ = 0,88, for dispersion conductivity is found to induce better agreement between the theoretical and experimental results especially for the cases of high Peclet number and high D c /d.