CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   radiation model (

sisilxp May 4, 2004 21:08

radiation model

i want to solve a combustion problem,but in the material i need to set the its property.

i want to know what is the meaning of absorption coefficient, and the unit is 1/m

thanks a lot

ROOZBEH May 5, 2004 03:37

Re: radiation model

When a thermal radiation ray incident to a medium, a part of this ray reflected and the other part is interpenetrated into the medium. A part of this intrpenetrating ray is absorbed by the medium and the other part is transmitted out of the medium. To find the absorbed part of the incident radiation energy, you can multiply incident radiation energy by the absorbtion coefficient of the medium. This coefficient, is a property of the medium like density or Cp etc.

Hope this help you


All times are GMT -4. The time now is 17:17.