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Re: [Question #695542]: Unstable advection simulaton for gas flow


Question #695542 on Yade changed:

Robert Caulk proposed the following answer:
Ok, thank you for the MWE.

Yes I see now, your density value is being used automatically for the
calculation of the Reynolds number, which is used to estimate a Nusselt
number, which is used to estimate the heat flux between the fluid and
the particles. So you are unstable in the conduction domain in this

The current Nusselt estimation is empirical for water in dense granular
packing. For simulating a gas, you will need to either assign the
Reynolds number manually (thermal.uniformReynolds) or modify the source
code to generate a proper local Nusselt number for your gas.



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