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June 22, 2005, 08:18 |
Radiation and interfaces
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#1 |
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Hi everbody!
On a previous message (Re: radiation on interfaces Posted By: Glenn Horrocks Date: Wed, 13 Apr 2005, 4:31 p.m. ) it can be read: Therefore you use "conservative interface flux" at the fluid-solid interface for radiation when the solid is transparent and you model radiation; you set emissivity and diffuse fraction if the solid is opaque and you do not model radiation in it. I want to simulate an opaque solid that interacts with a fluid. But in CFX 5.7.1 when you try this, you can set emissivity on the "fluid-side" of the interface only (P1, DT or Montecarlo radiation models). This sounds to me that a surface with the fluid temperature ('cause you set emissivity on the "fluid-side") is emitting. But if the "fluid-side" of the interface has a temperature quite different than the "solid-side", this could not be correct. You can set emissivity on the "solid-side" but you have to turn on radiation in the solid: this means it's no more opaque. Any suggestions? Thanks in advance! |
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