Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Transfer Research
Facteur d'impact: 1.199 Facteur d'impact sur 5 ans: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2012004569
pages 721-731

FINITE ELEMENT FREQUENCY-DOMAIN DIFFUSION APPROXIMATION OF TRANSIENT RADIATIVE TRANSPORT IN PLANAR GRADED INDEX MEDIA

Lijun Liu
School of Civil Engineering, Northeast Petroleum University Daqing 163318, People's Republic of China
Xiaoyan Liu
School of Civil Engineering, Northeast Petroleum University, Daqing 163318, People's Republic of China

RÉSUMÉ

The diffusion approximation equation in a frequency domain is presented for analyzing laser pulse transport in graded index planar media, and a finite element method is developed to obtain the solutions. The amplitude and phase of the hemispherical reflectance and the transmittance in the frequency domain are investigated. The effect of the optical depth and single scattering albedo of the media on the precision of the diffusion approximation are analyzed as compared to the results obtained on the basis of the radiative transfer equation. The results show that the diffusion approximation has a poor accuracy in the case where the radiative intensity is most unevenly distributed. The phase predicted by the finite element method based on the diffusion approximation is greatly influenced by the wave shape of the incident pulse.


Articles with similar content:

ANALYSIS OF TIME DEPENDENT RADIATION COMBINED WITH TIME DEPENDENT CONDUCTION HEAT TRANSFER IN A SLAB
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Prerana Nashine, T N Verma, Ashok Kumar Satapathy
A COMPARISON OF SPATIAL DISCRETIZATION SCHEMES FOR DIFFERENTIAL SOLUTION METHODS OF THE RADIATIVE TRANSFER EQUATION
ICHMT DIGITAL LIBRARY ONLINE, Vol.17, 2007, issue
Pedro J. M. Coelho
Theory of Cylindrical Transmission-Type TE01p-Cavity Resonator with Metallodielectric Filling
Telecommunications and Radio Engineering, Vol.61, 2004, issue 2-6
V. B. Kazansky
Identification of radiative parameters of dense scattering media with polarization analysis
ICHMT DIGITAL LIBRARY ONLINE, Vol.14, 2007, issue
Nicolas Riviere, Laurent Hespel
RADIATION TRANSFER IN FIBROUS MEDIA WITH LARGE SIZE PARAMETER
ICHMT DIGITAL LIBRARY ONLINE, Vol.7, 1995, issue
Yasuo Kurosaki, Jun Yamada