RADIATIVE TRANSFER SOLUTIONS WITHIN 3-D ENCLOSURES FILLED WITH NONGRAY GASES USING WSGGM-RG

초록

Using a narrow band-based, weighted sum of gray gases model with gray gas regrouping technique (WSGGM-RG) for non-homogeneous and non-isothermal combustion gas mixtures, problems of radiative transfer within three-dimensional enclosures filled with nongray gases were solved. The radiative transfer equation was solved based on discrete ordinate method (DOM) and ray-tracing method (RTM) with WSGGM-RG. The results of using WSGGM-RG were compared with those using the SNB model. The average radiative intensities and radiative heat fluxes using WSGGM-RG corresponded relatively well to those using the SNB model as benchmarks. A very good computational efficiency was also noted.