[Nek5000-users] variable viscosity formulation

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Wed Oct 25 14:23:19 CDT 2017


Hi Nek Forum,

     I am using a variable viscosity formulation for a Rayleigh-Benard
problem. I get the following error after some time :

ERROR:  Non-positive diffusivity (  -0.481    ) specified for field 1,
group 0 element

Please let me know what might be wrong.

Thank you
Swarandeep


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