Radiation in a three-dimensional gas turbine combustor

The finite-volume method for radiation in a three dimensional non-orthogonal geometry is combined here with geometric relations to be applied to a problem of gas turbine combustion chamber. An absorbing, emitting and anisotropically scattering medium is assumed to exist inside. The scattering phase function is modeled by a Legendre polynomial series. After a benchmark solution for three-dimensional rectangular combustor is obtained to validate the present formulation, a problem in three-dimensional non-orthogonal gas turbine combustor is investigated by changing such parameters as scattering albedo, scattering phase function and extinction coefficient. Forward scattering is found to produce higher radiative heat flux at hot and cold wall than backward scattering, and the optical thickness is also shown to play an important role in the problem.