Optical Thickness - Radiation Model

rsslnt · January 5, 2013, 02:08

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, 03:25

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

rsslnt · January 5, 2013, 03:54

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.

January 5, 2013, 02:08	Optical Thickness - Radiation Model	#1
rsslnt New Member Odakkattuvalasu Join Date: Jan 2012 Posts: 17 Rep Power: 14	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

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January 5, 2013, 03:25		#2
msaeedsadeghi Senior Member SSL Join Date: Oct 2012 Posts: 226 Rep Power: 14	You can find it here in Ansys Fluent 14 or others 5.3.9. Choosing a Radiation Model

January 5, 2013, 03:54		#3
rsslnt New Member Odakkattuvalasu Join Date: Jan 2012 Posts: 17 Rep Power: 14	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.