Weighted Sum of Gray Gas Model (WSGGM) in FLUENT
 

I'm trying to add user defined WSGG model in Fluent. I'm using the template found in the manual:
http://www.sharcnet.ca/Software/Fluent13/help/flu_udf/flu_udf_sec_define_wsggm_abs_coeff.html


But how can I add the weights for each band?

Like as shown on this page of the manual by agi. Where agi is dependent on coefficients b1i and b2i and tempearture.
http://www.sharcnet.ca/Software/Flue...xRadiWeig.html