Introducing diffsuion tensor in fluent

May 25, 2006, 20:23

While solving mass transfer problems using Fluent, is there a way to replace the scalar diffusivity of a substance with a diffusion tensor at least in 2D? How to go about in solving such a problem? Any suggestions?

May 26, 2006, 11:22

Try multicomponent diffusivity option. Its calculation is based upon Stefan-Maxwell formulation.

Swarup

May 31, 2006, 20:28

I can invoke the multicomponent diffusion in the material panel for the maxwell-stefan equation. But then, I think the equation uses scalar D as a tensor D. How do i input the coefficients of the tensor? Is it in the form of a UDF?

May 25, 2006, 20:23	Introducing diffsuion tensor in fluent	#1
Bharat Guest Posts: n/a	While solving mass transfer problems using Fluent, is there a way to replace the scalar diffusivity of a substance with a diffusion tensor at least in 2D? How to go about in solving such a problem? Any suggestions?

May 26, 2006, 11:22	Re: Introducing diffsuion tensor in fluent	#2
Swarup Guest Posts: n/a	Try multicomponent diffusivity option. Its calculation is based upon Stefan-Maxwell formulation. Swarup

May 31, 2006, 20:28	Re: Introducing diffsuion tensor in fluent	#3
Bharat Guest Posts: n/a	I can invoke the multicomponent diffusion in the material panel for the maxwell-stefan equation. But then, I think the equation uses scalar D as a tensor D. How do i input the coefficients of the tensor? Is it in the form of a UDF?

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