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Effects of the turbulent - to - laminar transition in monolithic reactors for automotive pollution control / Henrik Strom in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3194-3205 Titre : Effects of the turbulent - to - laminar transition in monolithic reactors for automotive pollution control Type de document : texte imprimé Auteurs : Henrik Strom, Auteur ; Srdjan Sasic, Auteur ; Bengt Andersson, Auteur Année de publication : 2011 Article en page(s) : pp. 3194-3205 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Pollution  abatement  Pollution  control  Reactor  Monolithic  construction Résumé : In the current work a detailed study is performed of the turbulent-to-laminar transition at the inlet of an automotive monolithic reactor. The effects of the transition on the conversion of gaseous species and on the deposition of particulate matter are investigated using numerical simulations. Two main effects of the turbulence on the conversion in the monolith have been identified: slow fluctuations due to turbulent eddies that are too large to enter the channels and rapid fluctuations due to smaller turbulent eddies that penetrate the channels. It is also shown that inertial particles may deposit inside the monolith channels, providing a likely explanation of the experimentally observed spatial deposition profiles of elements that chemically deactivate automotive catalysts. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944484 [article] Effects of the turbulent - to - laminar transition in monolithic reactors for automotive pollution control [texte imprimé] / Henrik Strom, Auteur ; Srdjan Sasic, Auteur ; Bengt Andersson, Auteur . - 2011 . - pp. 3194-3205. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3194-3205 Mots-clés : Pollution  abatement  Pollution  control  Reactor  Monolithic  construction Résumé : In the current work a detailed study is performed of the turbulent-to-laminar transition at the inlet of an automotive monolithic reactor. The effects of the transition on the conversion of gaseous species and on the deposition of particulate matter are investigated using numerical simulations. Two main effects of the turbulence on the conversion in the monolith have been identified: slow fluctuations due to turbulent eddies that are too large to enter the channels and rapid fluctuations due to smaller turbulent eddies that penetrate the channels. It is also shown that inertial particles may deposit inside the monolith channels, providing a likely explanation of the experimentally observed spatial deposition profiles of elements that chemically deactivate automotive catalysts. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944484