Learning Forum

[bruon]

 Hi.

 

I have three reactions and want to use finite-rate model to two reactions and eddy-dissipation model to one reaction

So I should use UDF, DEFINE_VR_RATE. In UDF manual, it gives an example about finite-rate model. But, there is no example about eddy-dissipation model. and I have no idea that how I implement the eddy-dissipation model.

 

As you may know, DEFINE_VR_RATE macro returns only two values: rr for laminar and rr_t for turbulent.

They may be used to calculate source and sink term of each species due to the reaction.

But, the reaction rate of eddy-dissipation model is defined for "each species" in Theory Guide manual.

What values should I return as a result of UDF in this case?

 

Briefly, can anyone let me know how I write DEFINE_VR_RATE udf for implementing eddy-dissipation model?

 

Thank you.