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June 27, 2010, 21:25 |
DO radiation model
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Join Date: Jun 2010
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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. luisilsa@hotmail.com |
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