Abstract
By discretizing the medium into many sublayers and employing a linear refractive index approximation for each sublayer, a curve Monte Carlo method is developed to solve the radiative heat transfer in an absorbing and scattering gradient-index medium. The probability models for emission point and radiation transfer path samplings are derived. For an absorbing and isotropic scattering medium with a sinusoidal refractive index distribution, the effects of optical thickness, boundary characteristics, and isotropic scattering on radiative equilibrium temperature and radiative heat flux in the medium are investigated by the method. From the analysis, some valuable information is obtained.
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