Abstract
The two-dimensional spatially elliptic Navier-Stokes equations have been used to investigate the radiative effects in chemically reacting compressible flows of premixed hydrogen and air in an expanding nozzle. The radiative heat transfer is simulated using the Monte Carlo method. The nongray model employed is based on the statistical narrow-band model with an exponential-tailed inverse intensity distribution. The spectral correlation has been considered in the Monte Carlo formulations. Results obtained demonstrate that the radiative effects on the wall heat transfer may be significant. Extensive parametric studies are conducted to investigate the effects of equivalence ratio, wall temperature, inlet flow temperature, and the nozzle size on the radiative and convective heat fluxes on the walls.
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