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Ansys Learning Forum Forums Discuss Simulation Fluids Error when trying to compile UDF Reply To: Error when trying to compile UDF

Rob
Forum Moderator

That suggests that there isn't any in the model - a species field with zero fraction may return a zero residual. Patching with multiphase multispecies does require more care as you're initialising & patching and the various patch regions/values can interact in odd ways. 

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