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Surface to Surface Radiation - material defined emissivity not being applied to boundaries
Posted 24 sept. 2013, 13:02 UTC−4 Heat Transfer & Phase Change Version 4.3 1 Reply
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Hi -
I'm doing an analysis involving Heat Transfer with Surface to Surface Radiation. With the model set up, the software does not appear to recognize emissivities as defined in each particular material. Under the materials node, none of my boundaries appear to have materials assigned to them, but all of my domains do. And when I try to run the analysis, it returns with an error that epsilon_rad is not defined.
So the domains have emissivities defined, but they do not seem to be carry8ng over to the boundaries. Has anyone else experienced this problem or know how to fix it?
Thanks!
I'm doing an analysis involving Heat Transfer with Surface to Surface Radiation. With the model set up, the software does not appear to recognize emissivities as defined in each particular material. Under the materials node, none of my boundaries appear to have materials assigned to them, but all of my domains do. And when I try to run the analysis, it returns with an error that epsilon_rad is not defined.
So the domains have emissivities defined, but they do not seem to be carry8ng over to the boundaries. Has anyone else experienced this problem or know how to fix it?
Thanks!
1 Reply Last Post 26 sept. 2013, 02:38 UTC−4
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Posted:
1 decade ago
Hi,
You have to define emissivity to boundaries, not domains. You can do this to under material node (make new one, change domain to boundary and select needed boundaries) or under current radiation node.
Best regards
Tero
You have to define emissivity to boundaries, not domains. You can do this to under material node (make new one, change domain to boundary and select needed boundaries) or under current radiation node.
Best regards
Tero