Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003169957> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W2003169957 endingPage "522" @default.
- W2003169957 startingPage "512" @default.
- W2003169957 abstract "Experiments were conducted to determine the effects of turbulence on the temperature of a heated air jet required to ignite a counterflowing cold hydrogen/nitrogen jet. In contrast to pseudo-turbulent flows, where turbulence was generated by only a perforated plate on the fuel side, resulting in little effect on ignition in a hydrogen system, fully turbulent flows with perforated plates on both sides of the flow were found to produce noticeable effects. The difference was attributed to the fact that in fully turbulent flows, a significantly larger range of turbulent eddies extend to smaller scales than in pseudo-turbulent flows. At atmospheric pressure, the lowest turbulence intensity studied had ignition temperatures notably lower than laminar ones, while further increases in turbulence intensity resulted in rising ignition temperatures. As a result, optimal conditions for nonpremixed hydrogen ignition exist in weakly turbulent flows where the ignition temperature is lower than can be obtained in other laminar or turbulent flows at the same pressure. Similar trends were seen for all fuel concentrations and at all pressures in the second ignition limit (below 3–4 atm). At higher pressures, turbulent flows caused the ignition temperatures to continue to follow the second limit resulting in ignition temperatures higher than the laminar values. The extension of the second limit ends at the highest pressures (7 to 8 atm) where evidence of third limit behavior appears. Three mechanisms were noted to explain the experimental results. First, turbulent eddies similar in size to the ignition kernel can promote discrete mixing of otherwise isolated pockets of gas. Second, this mixing can promote HO2 chain branching pathways, which can account for the enhanced ignition noted in the second limit where reaction is governed by crossover temperature chemistry. Third, turbulence limits the excursion times available for reaction, inordinately affecting the slower HO2 reactions. This is responsible for the increasing ignition temperature with turbulence intensity and pressure." @default.
- W2003169957 created "2016-06-24" @default.
- W2003169957 creator A5071429656 @default.
- W2003169957 creator A5076177399 @default.
- W2003169957 date "2003-02-01" @default.
- W2003169957 modified "2023-09-23" @default.
- W2003169957 title "Effects of turbulence on nonpremixed ignition of hydrogen in heated counterflow" @default.
- W2003169957 cites W1966316726 @default.
- W2003169957 cites W1986103151 @default.
- W2003169957 cites W1992415118 @default.
- W2003169957 cites W1994754099 @default.
- W2003169957 cites W2004778680 @default.
- W2003169957 cites W2014006372 @default.
- W2003169957 cites W2029383423 @default.
- W2003169957 cites W2060319919 @default.
- W2003169957 cites W2073603167 @default.
- W2003169957 cites W2078848761 @default.
- W2003169957 cites W2089450837 @default.
- W2003169957 cites W2136830973 @default.
- W2003169957 cites W2162722158 @default.
- W2003169957 doi "https://doi.org/10.1016/s0010-2180(02)00499-6" @default.
- W2003169957 hasPublicationYear "2003" @default.
- W2003169957 type Work @default.
- W2003169957 sameAs 2003169957 @default.
- W2003169957 citedByCount "35" @default.
- W2003169957 countsByYear W20031699572012 @default.
- W2003169957 countsByYear W20031699572013 @default.
- W2003169957 countsByYear W20031699572016 @default.
- W2003169957 countsByYear W20031699572017 @default.
- W2003169957 countsByYear W20031699572019 @default.
- W2003169957 countsByYear W20031699572020 @default.
- W2003169957 countsByYear W20031699572021 @default.
- W2003169957 crossrefType "journal-article" @default.
- W2003169957 hasAuthorship W2003169957A5071429656 @default.
- W2003169957 hasAuthorship W2003169957A5076177399 @default.
- W2003169957 hasConcept C119947313 @default.
- W2003169957 hasConcept C121332964 @default.
- W2003169957 hasConcept C153294291 @default.
- W2003169957 hasConcept C15476950 @default.
- W2003169957 hasConcept C159063594 @default.
- W2003169957 hasConcept C179065325 @default.
- W2003169957 hasConcept C185592680 @default.
- W2003169957 hasConcept C196558001 @default.
- W2003169957 hasConcept C57879066 @default.
- W2003169957 hasConcept C64127748 @default.
- W2003169957 hasConcept C76563973 @default.
- W2003169957 hasConcept C97355855 @default.
- W2003169957 hasConceptScore W2003169957C119947313 @default.
- W2003169957 hasConceptScore W2003169957C121332964 @default.
- W2003169957 hasConceptScore W2003169957C153294291 @default.
- W2003169957 hasConceptScore W2003169957C15476950 @default.
- W2003169957 hasConceptScore W2003169957C159063594 @default.
- W2003169957 hasConceptScore W2003169957C179065325 @default.
- W2003169957 hasConceptScore W2003169957C185592680 @default.
- W2003169957 hasConceptScore W2003169957C196558001 @default.
- W2003169957 hasConceptScore W2003169957C57879066 @default.
- W2003169957 hasConceptScore W2003169957C64127748 @default.
- W2003169957 hasConceptScore W2003169957C76563973 @default.
- W2003169957 hasConceptScore W2003169957C97355855 @default.
- W2003169957 hasIssue "3" @default.
- W2003169957 hasLocation W20031699571 @default.
- W2003169957 hasOpenAccess W2003169957 @default.
- W2003169957 hasPrimaryLocation W20031699571 @default.
- W2003169957 hasRelatedWork W1995739563 @default.
- W2003169957 hasRelatedWork W2006753089 @default.
- W2003169957 hasRelatedWork W2026365918 @default.
- W2003169957 hasRelatedWork W2035013431 @default.
- W2003169957 hasRelatedWork W2080973411 @default.
- W2003169957 hasRelatedWork W2314117732 @default.
- W2003169957 hasRelatedWork W2372556697 @default.
- W2003169957 hasRelatedWork W2387846389 @default.
- W2003169957 hasRelatedWork W2999675403 @default.
- W2003169957 hasRelatedWork W3146713106 @default.
- W2003169957 hasVolume "132" @default.
- W2003169957 isParatext "false" @default.
- W2003169957 isRetracted "false" @default.
- W2003169957 magId "2003169957" @default.
- W2003169957 workType "article" @default.