Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7055432 | International Journal of Heat and Mass Transfer | 2016 | 10 Pages |
Abstract
The radiative transfer and characteristics of multiple scattering in participating media are critical issues in the fields of atmospheric research and target detection. In this work, the apparent directional radiative intensity distribution influenced by multiple scattering is deduced using angle discretization in a computational domain and path integrals in the direction of transmission. The multiple scattering analytical method (MSAM) is used to determine the apparent directional radiative intensity distribution influenced by multiple scattering in participating media. The apparent directional radiative intensity as a function of the scattering order is calculated. The forward and backward scattering energies, which vary with the optical thickness, are determined using the above-mentioned method and model. The computational accuracy, efficiency, and applied range of the MSAM differ from those of the Monte Carlo method. The forward and backward scattering energy changes with the optical thickness for different scattering orders. Thus, the concept of a “backward optically thick medium” is proposed based on this. The current work perfects the multiple scattering theory. The results obtained are important for quick estimations of the main radiative characteristics of participating media.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Chuan-Xin Zhang, Yuan Yuan, Tian-Jiao Li, Shi-Kui Dong, He-Ping Tan,