Matches in SemOpenAlex for { <https://semopenalex.org/work/W2070243062> ?p ?o ?g. }
Showing items 1 to 92 of
92
with 100 items per page.
- W2070243062 endingPage "114" @default.
- W2070243062 startingPage "83" @default.
- W2070243062 abstract "In most practical situations, turbulent premixed flames are ducted and, accordingly, subjected to externally imposed pressure gradients. These pressure gradients may induce strong modifications of the turbulent flame structure because of buoyancy effects between heavy cold fresh and light hot burnt gases. In the present work, the influence of a constant acceleration, inducing large pressure gradients, on a premixed turbulent flame is studied using direct numerical simulations. A favourable pressure gradient, i.e. a pressure decrease from unburnt to burnt gases, is found to decrease the flame wrinkling, the flame brush thickness, and the turbulent flame speed. It also promotes counter-gradient turbulent transport. On the other hand, adverse pressure gradients tend to increase the flame brush thickness and turbulent flame speed, and promote classical gradient turbulent transport. As proposed by Libby (1989), the turbulent flame speed is modified by a buoyancy term linearly dependent on both the imposed pressure gradient and the integral length scale l t . A simple model for the turbulent flux u″c″ is also proposed, validated from simulation data and compared to existing models. It is shown that turbulent premixed flames can exhibit both gradient and counter-gradient transport and a criterion integrating the effects of pressure gradients is derived to differentiate between these regimes. In fact, counter-gradient diffusion may occur in most practical ducted flames." @default.
- W2070243062 created "2016-06-24" @default.
- W2070243062 creator A5015772240 @default.
- W2070243062 creator A5062462791 @default.
- W2070243062 date "1997-12-25" @default.
- W2070243062 modified "2023-09-25" @default.
- W2070243062 title "Effects of pressure gradients on turbulent premixed flames" @default.
- W2070243062 doi "https://doi.org/10.1017/s0022112097007556" @default.
- W2070243062 hasPublicationYear "1997" @default.
- W2070243062 type Work @default.
- W2070243062 sameAs 2070243062 @default.
- W2070243062 citedByCount "84" @default.
- W2070243062 countsByYear W20702430622012 @default.
- W2070243062 countsByYear W20702430622013 @default.
- W2070243062 countsByYear W20702430622014 @default.
- W2070243062 countsByYear W20702430622015 @default.
- W2070243062 countsByYear W20702430622017 @default.
- W2070243062 countsByYear W20702430622018 @default.
- W2070243062 countsByYear W20702430622019 @default.
- W2070243062 countsByYear W20702430622020 @default.
- W2070243062 countsByYear W20702430622021 @default.
- W2070243062 countsByYear W20702430622022 @default.
- W2070243062 countsByYear W20702430622023 @default.
- W2070243062 crossrefType "journal-article" @default.
- W2070243062 hasAuthorship W2070243062A5015772240 @default.
- W2070243062 hasAuthorship W2070243062A5062462791 @default.
- W2070243062 hasBestOaLocation W20702430622 @default.
- W2070243062 hasConcept C105923489 @default.
- W2070243062 hasConcept C110808204 @default.
- W2070243062 hasConcept C121332964 @default.
- W2070243062 hasConcept C129474609 @default.
- W2070243062 hasConcept C137109543 @default.
- W2070243062 hasConcept C153294291 @default.
- W2070243062 hasConcept C178790620 @default.
- W2070243062 hasConcept C185592680 @default.
- W2070243062 hasConcept C18762648 @default.
- W2070243062 hasConcept C192562407 @default.
- W2070243062 hasConcept C196558001 @default.
- W2070243062 hasConcept C205634578 @default.
- W2070243062 hasConcept C207870545 @default.
- W2070243062 hasConcept C538625479 @default.
- W2070243062 hasConcept C55477048 @default.
- W2070243062 hasConcept C57879066 @default.
- W2070243062 hasConcept C6506403 @default.
- W2070243062 hasConcept C69357855 @default.
- W2070243062 hasConcept C77576233 @default.
- W2070243062 hasConcept C83104080 @default.
- W2070243062 hasConcept C97355855 @default.
- W2070243062 hasConcept C98156149 @default.
- W2070243062 hasConceptScore W2070243062C105923489 @default.
- W2070243062 hasConceptScore W2070243062C110808204 @default.
- W2070243062 hasConceptScore W2070243062C121332964 @default.
- W2070243062 hasConceptScore W2070243062C129474609 @default.
- W2070243062 hasConceptScore W2070243062C137109543 @default.
- W2070243062 hasConceptScore W2070243062C153294291 @default.
- W2070243062 hasConceptScore W2070243062C178790620 @default.
- W2070243062 hasConceptScore W2070243062C185592680 @default.
- W2070243062 hasConceptScore W2070243062C18762648 @default.
- W2070243062 hasConceptScore W2070243062C192562407 @default.
- W2070243062 hasConceptScore W2070243062C196558001 @default.
- W2070243062 hasConceptScore W2070243062C205634578 @default.
- W2070243062 hasConceptScore W2070243062C207870545 @default.
- W2070243062 hasConceptScore W2070243062C538625479 @default.
- W2070243062 hasConceptScore W2070243062C55477048 @default.
- W2070243062 hasConceptScore W2070243062C57879066 @default.
- W2070243062 hasConceptScore W2070243062C6506403 @default.
- W2070243062 hasConceptScore W2070243062C69357855 @default.
- W2070243062 hasConceptScore W2070243062C77576233 @default.
- W2070243062 hasConceptScore W2070243062C83104080 @default.
- W2070243062 hasConceptScore W2070243062C97355855 @default.
- W2070243062 hasConceptScore W2070243062C98156149 @default.
- W2070243062 hasLocation W20702430621 @default.
- W2070243062 hasLocation W20702430622 @default.
- W2070243062 hasOpenAccess W2070243062 @default.
- W2070243062 hasPrimaryLocation W20702430621 @default.
- W2070243062 hasRelatedWork W1860707105 @default.
- W2070243062 hasRelatedWork W2070243062 @default.
- W2070243062 hasRelatedWork W2086310777 @default.
- W2070243062 hasRelatedWork W2099914809 @default.
- W2070243062 hasRelatedWork W2260867676 @default.
- W2070243062 hasRelatedWork W2795146218 @default.
- W2070243062 hasRelatedWork W3135610394 @default.
- W2070243062 hasRelatedWork W3166544534 @default.
- W2070243062 hasRelatedWork W349536842 @default.
- W2070243062 hasRelatedWork W795008360 @default.
- W2070243062 hasVolume "353" @default.
- W2070243062 isParatext "false" @default.
- W2070243062 isRetracted "false" @default.
- W2070243062 magId "2070243062" @default.
- W2070243062 workType "article" @default.