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Numerical determination of radiative view factors using ray tracing / T. Walker in Journal of heat transfer, Vol. 132 N° 7 (Juillet 2010) 

Public ISBD [article]  in Journal of heat transfer > Vol. 132 N° 7 (Juillet 2010) . - pp.[072702-1/6] Titre : Numerical determination of radiative view factors using ray tracing Type de document : texte imprimé Auteurs : T. Walker, Auteur ; S.-C. Xue, Auteur ; G. W. Barton, Auteur Article en page(s) : pp.[072702-1/6] Note générale : Physique Langues : Anglais (eng) Mots-clés : Radiative  heat  transfer  View  factor  Ray  tracing  Monte  Carlo  method  Polymer  optical  fiber Index. décimale : 536 Chaleur. Thermodynamique Résumé : A ray-tracing method is presented for numerically determining radiative view factors in complex three-dimensional geometries. This method uses a set of “primitive” shapes to approximate the required geometry together with a Monte Carlo simulation to track the fate of randomized rays leaving each surface. View factors were calculated for an operational fiber drawing furnace using both numerical integration and ray-tracing methods. Calculated view factor profiles were essentially identical above a ray density of 105 per unit area. Run times for the ray-tracing method were considerable longer, although the setup time to describe a new geometry is very short and essentially independent of system complexity. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Numerical determination of radiative view factors using ray tracing [texte imprimé] / T. Walker, Auteur ; S.-C. Xue, Auteur ; G. W. Barton, Auteur . - pp.[072702-1/6]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 7 (Juillet 2010) . - pp.[072702-1/6] Mots-clés : Radiative  heat  transfer  View  factor  Ray  tracing  Monte  Carlo  method  Polymer  optical  fiber Index. décimale : 536 Chaleur. Thermodynamique Résumé : A ray-tracing method is presented for numerically determining radiative view factors in complex three-dimensional geometries. This method uses a set of “primitive” shapes to approximate the required geometry together with a Monte Carlo simulation to track the fate of randomized rays leaving each surface. View factors were calculated for an operational fiber drawing furnace using both numerical integration and ray-tracing methods. Calculated view factor profiles were essentially identical above a ray density of 105 per unit area. Run times for the ray-tracing method were considerable longer, although the setup time to describe a new geometry is very short and essentially independent of system complexity. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]