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-   -   implementation of diffusion coefficients and use of diffusion coefficients (http://www.cfd-online.com/Forums/openfoam-solving/73146-implementation-diffusion-coefficients-use-diffusion-coefficients.html)

stephan February 28, 2010 15:30

implementation of diffusion coefficients and use of diffusion coefficients
 
Hi, i am wondering which file cotains the diffusion coefficients of various species. i found some material in the dir liquids of the thermophysical-lib but here quite a few species have the same diffusion coefficient than heptane. so i guess there must be some other places to look but i dont know where?! Any help or experience in this forum? Looking into solvers which should use diffusion coefficents i was even more confused since every laplacian term uses an effictive viscosity coefficient (lam. plus turb. as usual) instead of a diffusion coefficient. Any help would be really appreciated! regards stephan


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