Warning: "zero diffusivity" -- CFD Online Discussion Forums

April 16, 2010, 01:43	Warning: "zero diffusivity"	#1
MASOUD Senior Member MASOUD Join Date: Mar 2009 Posts: 102 Rep Power: 17	I have a heat & mass transfer problem (fuel cell). When I initialize the calculation, the following warning comes up: ---------------------- Warning: Mass_Diffusivity: invalid (zero) diffusivity. Please check material properties. ---------------------- I'm utilizing "Multicomponent" scheme in "Mass diffusivity" panel of the defined "Mixture" and set all Dij to 0.00005. That means there is no "zero diffusivity" in the system. So why should I get this warning? Your reply is highly appreciated. Masoud

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