Questions on Species Mass diffusion coefficient

February 22, 2008, 18:06

I created a mixture material out of two fluid species: carbon and liquid iron. Carbon is the dilute and liquid iron is the solvent. In the materials panel, I got confused with the mass coefficient of species. I guess in my case only fickian diffusion exists since the carbon mass fraction is around 0.4%. But should I choose the dilute approximation or constant dilute approximation?

I prefer the dilute approximation but how can I specify the bulk species(liquid iron) in the mixture? I wonder if someone can give me a helping hand? Thanx!

March 11, 2008, 11:06

nobody knows it?

February 22, 2008, 18:06	Questions on Species Mass diffusion coefficient	#1
Eddy Guest Posts: n/a	I created a mixture material out of two fluid species: carbon and liquid iron. Carbon is the dilute and liquid iron is the solvent. In the materials panel, I got confused with the mass coefficient of species. I guess in my case only fickian diffusion exists since the carbon mass fraction is around 0.4%. But should I choose the dilute approximation or constant dilute approximation? I prefer the dilute approximation but how can I specify the bulk species(liquid iron) in the mixture? I wonder if someone can give me a helping hand? Thanx!

March 11, 2008, 11:06	Re: Questions on Species Mass diffusion coefficien	#2
eddy Guest Posts: n/a	nobody knows it?

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