UDF-porous media -- CFD Online Discussion Forums

August 12, 2016, 05:51	UDF-porous media	#1
Ribes New Member Join Date: Jul 2016 Posts: 13 Rep Power: 9	Hi! I wanted to simulate the diffusion of vapor in a porous material...I wrote an UDF to impose different diffusivity in the air and in the porous media but I don't know how to impose the boundary condition between them, with the species transport model I can only impose zero-flux or mass fraction x that I don't know..how should i write the UDS?

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