code_saturne User's Forum

Hello everyone and to whom may reply:
I am facing a problem when I need to verify a example which uses Perry(5 GG) model to calculate the absorption coefficient and so on. Thus I read the cs_user_radiative_transfer file, and I found there were several models could be called like FSCK and ADF.
My question is, when I need to establish a equation concerning of emissivity, absorption coefficient and temperature(my example article had demonstrated the coefficients for the Perry WSGG model in different H2O/CO2 ratios ), whether I can define the absorption coefficient and emissivity(obviously, non-grey) via user-function by connecting with the cells' temperature?
If Code_Saturne indeed supports that, what are the main points should I notice? Or how can I use the cells' temperature given the initialization job is done.
I am a student and new to CS. Sincerely thank you for your generous help .

Hello,

I mentionned your post to a colleague who knows these models much better than I do, so you will hopefully get a more complete answer soon.

There is a user function to define the absorption coefficient, so you can define your own. There is currently no user function for the emissivity in the volume, but we need to add one (I am just not sure of the best place to call it, which is the reason why we have not added it yet).

Best regards,

Yvan

Thank you sir, I really appreciate it！