The usjbect deals with a reduced model of the conductive-radiative transient transfer in a participating medium. The accuracy of the analytical solution based on the well-known two-flux approximation and expressed with global radiative coefficients is tested in the case of shparp thermal excitation by a heat pulse on the front face of anisotropically scattering media. A very good agreement is achieved compared with numerical and analystical simulations involving high foward scattering, linear anisotropic scattering or Rayleigh scattering. This reduced model is then used in the inverse approach in order to determine the intrinsic diffusivity of semitransparent media.
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