Limiting length, steady spread, and nongrowing flames in concurrent flow over solids / Ya-Ting Tseng in Journal of heat transfer, Vol. 132 N° 9 (Septembre 2010)  

Public ISBD [article]  inJournal of heat transfer > Vol. 132 N° 9 (Septembre 2010) . - pp. [091201-1/9] Titre : Limiting length, steady spread, and nongrowing flames in concurrent flow over solids Type de document : texte imprimé Auteurs : Ya-Ting Tseng, Auteur ; James S. T'ien, Auteur Article en page(s) : pp. [091201-1/9] Note générale : Physique Langues : Anglais (eng) Mots-clés : Solid flame spread Fire growth Limiting length Microgravity Index. décimale : 536 Chaleur. Thermodynamique Résumé : A detailed two-dimensional transient model has been formulated and numerically solved for concurrent flames over thick and thin solids in low-speed forced flows. The processes of flame growth leading to steady states are numerically simulated. For a thick solid, the steady state is a nongrowing stationary flame with a limiting length. For a thin solid, the steady state is a spreading flame with a constant spread rate and a constant flame length. The reason for a nongrowing limiting flame for the thick solid is the balance between the flame heat feedback and the surface radiative heat loss at the pyrolysis front, as first suggested by Honda and Ronney. The reason for achieving a steady spread for thin solids is the balance between the solid burnout rate and the flame tip advancing rate. Detailed transient flame and thermal profiles are presented to illustrate the different flame growth features between the thick- and thin-solid fuel samples. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Limiting length, steady spread, and nongrowing flames in concurrent flow over solids [texte imprimé] / Ya-Ting Tseng, Auteur ; James S. T'ien, Auteur . - pp. [091201-1/9]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 9 (Septembre 2010) . - pp. [091201-1/9] Mots-clés : Solid flame spread Fire growth Limiting length Microgravity Index. décimale : 536 Chaleur. Thermodynamique Résumé : A detailed two-dimensional transient model has been formulated and numerically solved for concurrent flames over thick and thin solids in low-speed forced flows. The processes of flame growth leading to steady states are numerically simulated. For a thick solid, the steady state is a nongrowing stationary flame with a limiting length. For a thin solid, the steady state is a spreading flame with a constant spread rate and a constant flame length. The reason for a nongrowing limiting flame for the thick solid is the balance between the flame heat feedback and the surface radiative heat loss at the pyrolysis front, as first suggested by Honda and Ronney. The reason for achieving a steady spread for thin solids is the balance between the solid burnout rate and the flame tip advancing rate. Detailed transient flame and thermal profiles are presented to illustrate the different flame growth features between the thick- and thin-solid fuel samples. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]

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