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-   -   Optical Thickness - Radiation Model (http://www.cfd-online.com/Forums/fluent/111369-optical-thickness-radiation-model.html)

rsslnt January 5, 2013 03:08

Optical Thickness - Radiation Model
 
There was a question already in this topic. I am trying to choose an appropriate model for simulating radiation. The criteria for selection is by calculating optical thickness. but how do we calculate optical thickness for a thermal radiation HVAC problem? There are so many formulae on the internet and none of them are clear to me. Please kindly help. I am sure this thread will be revisited by many others in future.

Thanking you,


rsslnt

msaeedsadeghi January 5, 2013 04:25

You can find it here in Ansys Fluent 14 or others
5.3.9. Choosing a Radiation Model

rsslnt January 5, 2013 04:54

Thank you for the reply. Actually I have already checed it. It doesn't say anything about how to calculate optical thickness. It only shows which model we should select for what values of optical thickness.


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