|July 19, 2010, 19:51||
Radiative Heat Transfer
Join Date: Jul 2010
Posts: 29Rep Power: 8
I have a question with regard to boundary conditions using radiative heat transfer. I have a gas volume sandwiched between two solid surfaces, where both interfaces are then set as a contact interface. The surface for one of the solids has an emissivity of .98 and is at 1273 K and the other has an emissivity of .11 (reflectivity .89). The gas interfaces then should, I would assume, be set to have a transmissivity of 1.0, since Iím assume there is no radiative interaction with the gas. However, I do not have any radiation heat transfer in this case. I must set the emissivity to some absolute value in order to acquire some heat transfer, which I think, is incorrect since this then assumes that the gas heats up to then generate radiation to transfer to the other surface. How, then, would I get 100% of the radiation from one surface to reach the other? I made sure to set the physics continuum to use S2S radiation and not participating medium, and I set the surface orientation of the gas volume to be inward and the solids to be outward.
If anyone could provide some insight, I would be greatly appreciative.
|radiation, radiative heat transfer, s2s|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Convective / Conductive Heat Transfer in Hypersonic flows||enigma||Main CFD Forum||2||November 1, 2009 23:53|
|How can I increase Heat Transfer at Domain Interf?||B.Simon||CFX||3||October 28, 2008 19:53|
|Convective Heat Transfer - Heat Exchanger||Mark||CFX||6||November 15, 2004 16:55|
|radiative heat transfer||Tim||FLUENT||0||February 20, 2004 14:28|
|radiative heat transfer||ulrich bieder||Main CFD Forum||7||November 19, 2000 09:27|