首页|Benchmark simulations of radiative transfer in participating binary stochastic mixtures in two dimensions
Benchmark simulations of radiative transfer in participating binary stochastic mixtures in two dimensions
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We study radiative transfer in participating binary stochastic mixtures in two dimensions(2D)by developing an accurate and efficient sim-ulation tool.For two different sets of physical parameters,2D benchmark results are presented,and it is found that the influence of the stochastic mixture on radiative transfer is clearly parameter-dependent.Our results confirm that previous multidimensional results obtained in different studies are basically consistent,which is interpreted in terms of the relationship between the photon mean free path lp and the system size L.Nonlinear effects,including those due to scattering and radiation-material coupling,are also discussed.To further understand the particle size effect,we employ a dimensionless parameter lp/L,from which a critical particle size can be derived.On the basis of further 2D simulations,we find that an inhomogeneous mix is obtained for lp/L＞0.1.Furthermore,2D material temperature distributions reveal that self-shielding and particle-particle shielding of radiation occur,and are enhanced when lp/L is increased.Our work is expected to provide benchmark results to verify proposed homogenized models and/or other codes for stochastic radiative transfer in realistic physical scenarios.
Cong-Zhang Gao、Ying Cai、Jian-Wei Yin、Zheng-Feng Fan、Pei Wang、Shao-Ping Zhu、Cheng-Wu Huang、Yang Zhao、Jia-Min Yang
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Institute of Applied Physics and Computational Mathematics,Beijing 100088,People's Republic of China
Laser Fusion Research Center,China Academy of Engineering Physics,Mianyang,Sichuan 621900,People's Republic of China
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