The Monte Carlo method is a general description of a large family of probabilistic methods, and in heat transfer it is a useful technique for computing radiative exchange between objects with complex geometries. One system that commonly utilizes a Monte Carlo method is radiative exchange within a packed sphere system. For such a system, one popular method is the Monte Carlo ray-tracing (SRT) scheme. Although this method has provided accurate results for a large number of applications, it can be computationally demanding, and it can be difficult to implement for complex surface conditions. Tn the present study, a non-probabilistically based ray-trace scheme is developed. The scheme is called the multiple-rays tracing scheme and is hereafter referred to as the MRT scheme. The MRT scheme can more easily account for complex surface conditions, and benchmark comparisons between the MRT and SRT schemes show the two to be equivalent in accuracy. Finally, the results show the MRT scheme to be as much as 13 times faster for certain configurations. [References: 9]
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