Hi~
I got another problem with finite rate/eddy dissipation model using surface reaction.
The surface reaction was activated by
1.Model→Species transport→check "Wall surface"
2.Assign material in mixture to "Site species"
3.Material→Mixture→Create "Wall Surface Reaction" and "Mechanism"
3.Boundary conditions→ check "Reaction"→ assign "Site species"
However, I saw that the wall surface reaction only used finite-rate model setup.
The setup of Eddy dissipation mode was disabled and turn grey on the setup panel.
Running the simulation and check contour of "Rate of Reaction", and then there was no rate of reaction.
The value of rate of reaction is 0.
However, the Kinetic Rate of Reaction had some values.
I checked the description in "34.4. Alphabetical Listing of Field Variables and Their Definitions."
It said:
Rate of Reaction-n
(in the Reactions... category) is the effective rate of progress of th reaction. For the finite-rate model, the value is the same as the Kinetic Rate of Reaction-n. For the eddy-dissipation model, the value is equivalent to the Turbulent Rate of Reaction-n. For the finite-rate/eddy-dissipation model, it is the lesser of the two.
Does it mean that surface reaction could not be simulated using Finite-rate/Eddy dissipation model?
Is there another way?
Thank you!
I built up a model using Finite rate/Eddy dissipation with surface reaction.
The surface reaction is calculated using Arrhenius rate. The option for Mixing rate is blocked an turned grey in setup window.
I found that "Rate of Reaction" is zero, "Kinetic Rate of Reaction" is a non-zero value, and "Turbulent Rate of Reaction" is zero, using "Report→Contours→Reactions...".
Another strange thing is that the contour of mass fraction of this reaction product is not zero.
The value is 1 on the wall.
However, I don't know how to calculate the produciton rate.
The effective rate of reaction is zero, Turbulent Rate of Reaction is zero, and Kinetic Rate of Reaction is not zero.
However, there is indeed product generation into the domain.
This is weird. I wonder why and how do I treat the result?
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