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How t o define head loss coefficient?pls urgent.

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Old   January 20, 2006, 10:14
Default How t o define head loss coefficient?pls urgent.
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I want to define darcy's friction factor in fluent?How t odefine it?Head loss=f*l*V^2/2gd.In this i want to define f.?second thing is that what is its relation wit hlinear and quadratic resistances in subdomain sources.Pls anybody knows then tell me.

linear resistence =CR1=m/Kperm.

CR2=Kloss*density/K. Here Kperm is permeabilty to define this?suppose any obstruction takes 20 percent volume then is it this right or not? and what is it related to friction factor? I also want to know that is 2D blcoakge possible or not in fluent?.Pls help me. Thanking you all.

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