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Proceedings of CHT-15. 6th International Symposium on ADVANCES IN COMPUTATIONAL HEAT TRANSFER
May, 25-29, 2015, Rutgers University, New Brunswick, NJ, USA

DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf


ISBN Print: 978-1-56700-429-8

ISSN: 2578-5486

A MONTE CARLO ALGORITHM BASED ON THE HYBRID TRANSPORT-DIFFUSION MODEL FOR TRANSIENT RADIATIVE TRANSFER CALCULATIONS

pages 427-440
DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.360
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摘要

In this work, a new Monte Carlo algorithm based on the hybrid-transport diffusion (HTD) model [1] is evaluated for solving the transient radiative transfer equation (RTE) in a three-dimensional problem related to optical tomography applications. The solution of the diffusion equation is used as a control-variate in the Monte Carlo algorithm in order to decrease the statistical uncertainties. The computational cost is compared to a classical MCM-RTE approach. The results show that the HTD model remains more efficient when the scattering optical thickness increases. However, in multidimensional problem, the MCM-HTD approach do not perform as well as formerly observed in one-dimensional problem [1]. It seems that the multi-scale HTD model is more efficient in hot media where emission plays a relevant role, than in cold media like those encountered in optical tomography applications.

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