Determination Of Radiative Fluxes In An Absorbing, Emitting, And Scattering Vapor Formed By Laser Irradiation
Abbreviated Journal Title
J. Heat Transf.-Trans. ASME
A two-dimensional computer model is developed to determine the radiative heat flux distributions within the vapor formed above a metal target irradiated by a laser beam. An axisymmetric cylindrical enclosure containing a radiatively participating medium is considered. Scattering is assumed to be isotropic and allowances are made for variation of the radiative properties of the medium and boundaries. The P-1 and P-3 spherical harmonics approximations are used to solve the integro-differential radiative transfer equation. The resulting equations are then solved for the radial and axial heat fluxes using a finite-difference algorithm. The most significant factors affecting the results obtained from both the P-1 and P-3 approximations were the optical thickness of the medium and the type of laser profile incident upon the medium. Using different wall reflectivities and scattering albedos had a smaller effect. Changing the medium temperature had an insignificant effect as long as medium temperatures were below 20,000 K.
Journal of Heat Transfer-Transactions of the Asme
"Determination Of Radiative Fluxes In An Absorbing, Emitting, And Scattering Vapor Formed By Laser Irradiation" (1991). Faculty Bibliography 1990s. 225.