TY - JOUR
T1 - Radiation element method for transient hyperbolic radiative transfer in plane-parallel inhomogeneous media
AU - Guo, Zhixiong
AU - Kumar, Sunil
N1 - Funding Information:
Received 16 June 2000; accepted 15 October 2000. The authors acknowledge partial support from Sandia-NSF joint grant AW-9963 administered by Sandia National Laboratory, Albuquerque, NM, Dr. Shawn Burns, Project Manager. Address correspondence to Dr. Z. Guo, Polytechnic University, Department of Mechanical Engineering, 6 Metrotech Center, Brooklyn, NY 111, US2A. E-0mail: [email protected]
PY - 2001/4
Y1 - 2001/4
N2 - In this study the radiation element method is formulated to solve transient radiative transfer with light radiation propagation effect in scattering, absorbing, and emitting media with inhomogeneous property. The accuracy of the method is verified by good agreement between the present calculations and Monte Carlo simulations. The sensitivity of the method against element size, ray emission number, and time increment size is examined. The transient effect of radiation propagation is essential in short-pulse laser radiation transport when the input pulse width is not considerably larger than the system radiation propagation time. The transient characteristics of radiative transfer are investigated in the media subject to collimated laser irradiation and/or diffuse irradiation with temporal Gaussian and/or square profiles. The inhomogeneous profile of extinction coefficient of the medium affects strongly the transient radiative flux divergence inside the medium.
AB - In this study the radiation element method is formulated to solve transient radiative transfer with light radiation propagation effect in scattering, absorbing, and emitting media with inhomogeneous property. The accuracy of the method is verified by good agreement between the present calculations and Monte Carlo simulations. The sensitivity of the method against element size, ray emission number, and time increment size is examined. The transient effect of radiation propagation is essential in short-pulse laser radiation transport when the input pulse width is not considerably larger than the system radiation propagation time. The transient characteristics of radiative transfer are investigated in the media subject to collimated laser irradiation and/or diffuse irradiation with temporal Gaussian and/or square profiles. The inhomogeneous profile of extinction coefficient of the medium affects strongly the transient radiative flux divergence inside the medium.
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U2 - 10.1080/104077901750106642
DO - 10.1080/104077901750106642
M3 - Article
AN - SCOPUS:1842841683
SN - 1040-7790
VL - 39
SP - 371
EP - 387
JO - Numerical Heat Transfer, Part B: Fundamentals
JF - Numerical Heat Transfer, Part B: Fundamentals
IS - 4
ER -