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-   -   Material properties needed for the DO-Model (http://www.cfd-online.com/Forums/fluent/103528-material-properties-needed-do-model.html)

rambex001 June 20, 2012 05:07

Material properties needed for the DO-Model
 
Hallo everybody,

I have a question concerning the absorption coefficient and the DO-Model in fluent. I tried to simulate a flat plate solar panel. For the semi-transparent glass cover I can calculate the absorption coefficient with the Lambert-Beer law, the next layer is air and here I set the absorption coefficient to 0.
My problem is now to determine the absorption coefficient of the absorber. I know the absorptivity (95%) and the reflectivity (5%) and the thickness from 1,5 mm, but how can I implement this correctly in the material properties where the absorption coefficient, scattering coefficient and the refractive index is needed?

I hope that there is someone out there who can help me.
Many thanks
Alexander


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