DOI: 10.1615/RAD-16
ISBN Print: 978-1-56700-458-8
ISSN Online: 2642-5629
ISSN Flash Drive: 2642-5661
CALCULATIONS OF RADIATIVE HEAT TRANSFER IN AN AXISYMMETRIC JET DIFFUSION FLAME AT ELEVATED PRESSURES USING DIFFERENT METHODS
摘要
Radiation heat transfer in axisymmetric jet diffusion flames under conditions relevant to oxygen-enriched combustion at total pressures of 1 and 30 atm was calculated using several gas radiation models: line-by-line, narrow-band correlated-k, wide-band correlated-k, full-spectrum correlated-k, and weight-sum-of-grey-gases. An optimized full-spectrum correlated-k, an optimized narrow-band correlated-k, and a wide-band correlated-k model were proposed and evaluated. Line-by-line results are used as the benchmark solution in the evaluation of other gas radiation models. The optimized full-spectrum correlated-k model was found to improve significantly the computational efficiency to a level comparable to that of the weight-sum-of-gray-gases model without significant loss of accuracy.