Diffusivity -- CFD Online Discussion Forums

April 29, 2002, 03:33	Diffusivity	#1
Murthy Guest Posts: n/a	hello, Iam trying to model the solid phase energy equation for porous media using the following PDE, 0 = del.(keff.del(Ts)) -X((Ts)-(Tf)). where del is the del operator, X is constant and keff is the solid thermal conductivity. Now according the manual I should develop the model using the DEFINE-DIFFUSIVITY(..) for the keff. My question is should I give the source as Keff or diffusivity = keff/(Density*specific heat). Thnaks for the same, Murthy

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