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how to set boundary condition about porous zone

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Old   March 21, 2001, 02:25
Default how to set boundary condition about porous zone
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I have a problem about the species transport I want to set the species to diffusion in a single direction ,

I try the porous zone,but it just can make the flow to flow in a single direction,it can not make the species to transfer in a single direction

thank you so much


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Old   March 21, 2001, 21:02
Default Re: how to set boundary condition about porous zon
Greg Perkins
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I don't think you can have a diffusion co-efficient which is different in different directions. As far as I'm aware all diffusion co-efficients are isotropic. You can't even set the user defined diffusion co-efficient to have different values in the different co-ordinate directions!

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