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传热学
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ISSN 打印: 1064-2285
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传热学

DOI: 10.1615/HeatTransRes.2011002797
pages 301-315

Short Pulse Collimated Radiation with Diffusely Reflecting Boundaries

Biranchi Padhi
Department of Mechanical Engineering, International Institute of Information Technology, Bhubaneswar, Odisha-751003, India
Prasenjit Rath
School of Mechanical Sciences, Indian Institute of Technology, Bhubaneswar, Odisha-752050, India
Swarup Kumar Mahapatra
Indian Institute of Technology Bhubaneswar
Ashok Kumar Satapathy
Department of Mechanical Engineering, National Institute of Technology, Rourkela, Odisha-769 008, India

ABSTRACT

Short pulse collimated radiation in plane parallel participating medium bounded by diffusely reflecting boundaries is modeled using the finite volume method. One boundary is exposed to a short-pulse collimated laser beam while the opposite boundary is diffusely reflecting. In the proposed formulation, the intensity is evaluated directly without splitting it into collimated and diffuse part. Two spatial differencing schemes: STEP and CLAM are used for discretizing the spatial term. The results from the proposed method are compared with the available results from the literature and good agreement is found. It is found that when the boundary wall is gray, multiple peaks are observed in the reflected flux.