Assessment of narrow-band and full spectrum gas radiation methods in a real industrial glass furnace configuration

•Radiative heat transfer in glass furnaces is considered.•Several approximate models of flame radiation are assessed against LBL calculations in a realistic industrial configuration.•Among narrow band models, the L-distribution approach is the most accurate.•The RC-SLW model provides a high accuracy and can be confidently used for radiative transfer calculations in 3D high temperature configurations. This work is dedicated to a comparison of various methods of gaseous flame radiation in a three-dimensional configuration representative of a glass furnace studied at Saint Gobain Research Paris. For this purpose, several narrow band and full spectrum models of flame radiation are assessed against LBL calculations. Among narrow band models, the recently proposed l-distribution method is shown to be more accurate than the k-distribution method. Among global models, the RC-SLW technique provides a high accuracy and can be confidently used for radiative heat transfer calculations in three-dimensional high temperature configurations.