|June 27, 2010, 21:25||
DO radiation model
Join Date: Jun 2010
Posts: 1Rep Power: 0
Has anyone used the discrete ordenates (DO) radiation model???
If someone has please take a look at this simple case;
I have a room (fluid, air) with adiabatic interior walls, and one exterior wall of glass (solid, semitransparent) with a radiation boundary condition (external radiation temperature =293K). No external irradiation for the moment. I start the simulation with 300 K initial domain temperature and after some iteration i found temperature below 293K (which is impossible). In fact the lower values of some parameters (emissivity, diffuse fraction) i use the lower temperature i reach (e.g.100 K).
Looks like there is a problem in the energy balance while using the DO model and some parameters (emissivity, diffuse fraction) not equal to 1.
Any solution? Thanks so much.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Use of k-epsilon and k-omega Models||Jade M||Main CFD Forum||10||December 4, 2013 04:04|
|How model radiation of both solid wall and fluid£¿||Harry Qiu||FLUENT||2||February 4, 2013 00:04|
|Help: Radiation model||MANOJKUMAR||FLUENT||4||November 24, 2005 03:45|
|definition difficulty-->DO radiation model||Harry Qiu||FLUENT||0||March 29, 2001 09:19|
|RE: Radiation model||Ashutosh Joshi||FLUENT||1||January 30, 2001 11:50|