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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Surface Reaction: UDF: Ansys Fluent Error – reg › Reply To: Surface Reaction: UDF: Ansys Fluent Error – reg

October 29, 2024 at 4:29 pm
sudeepns.197me025
Subscriber

Yes, no more SIGSEGV error. 

As soon as I turn on the surface reaction, the residuals of CH4, CO2, Energy, and Continuity nearly shoot up to e+30 and apparently, I receive a Floating point error. 
(Note: I turn on the Surface reaction in the Porous Zone)

To overcome that error, now I am running simulation by keeping Volumetric reaction in porous zone and utilizing UDF for surface reaction. As per my observation after 20K iterations (2000 time steps with 10 iterations), I found surface reaction is not happening even though I am using UDF.Â