Diffusion Equaton Fluent -- CFD Online Discussion Forums

November 19, 2011, 19:17	Diffusion Equaton Fluent	#1
natantyt Member Nathan Join Date: Aug 2010 Posts: 62 Rep Power: 15	Hi I want to model a pure mass diffusion equation (laplace Equation) with certain concentration and the inlet and outlet of a cube geometry. How can I do that without having a concentration gradient from outlet toward the centre of the geometry.What should be the boundary conditions? How can I calculate the molar diffusion flux at the inlet. The flux part of the Fluent can not be use because I set velocity as zero in the boundary conditions. Thanks,

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