Analysis of transport of collimated radiation in a participating media using the lattice Boltzmann method

作者：Mishra Subhash C^*; Vernekar Rohan Ranganath

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2012, 113(16): 2088-2099.

DOI：10.1016/j.jqsrt.2012.06.009

• Radiative heat transfer
• Collimated radiation
• Participating medium
• Lattice Boltzmann method

Application of the lattice Boltzmann method (LBM) recently proposed by Asinari et al. [Asinari P, Mishra SC, Borchiellini R. A lattice Boltzmann formulation to the analysis of radiative heat transfer problems in a participating medium. Numer Heat Transfer B 2010; 57:126-146] is extended to the analysis of transport of collimated radiation in a planar participating medium. To deal with azimuthally symmetric radiation in planar medium, a new lattice structure for the LBM is used. The transport of the collimated component in the medium is analysed by two different, viz., flux splitting and direct approaches. For different angles of incidence of the collimated radiation, the LBM formulation is tested for the effects of the extinction coefficient, the anisotropy factor, and the boundary emissivities on heat flux and emissive power distributions. Results are compared with the benchmark results obtained using the finite volume method. Both the approaches in LBM provide accurate results.

• 出版日期2012-11