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June 22, 2005, 09:51
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species transport equation
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Hi! I'm modelling unsteady LES with dynamic mesh, including regions of porous media. I'm also solving species transport equation without reactions. I have severe problems in the form of bad convergence and fluctuations of residuals and pressure.When a disable the species eq it works allright. The mixture consists of two identical fluids. For the mixtures density and viscosity I have chosen volume- /mass- weighted mixing laws, respectively. For the mass diffusivity I have the constant-dilute approximation.May some of these be a problem? Please reply, I am desperate. best regards /daniel.
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