SAE Technical Paper Series 2002
DOI: 10.4271/2002-01-2868
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Amplified Pressure Waves During Autoignition: Relevance to CAI Engines

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Cited by 105 publications
(110 citation statements)
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“…In the numerical simulations of Bradley et al [16] the pressure ratio,P, at the detonation front was found to increase with 3, as dP/d3 = 0.16, within the detonation peninsula. In general, the absence of a reactivity gradient and the mass divergence prevented a developing detonation from propagating outside the hot spot.…”
Section: Engine Operational Regimesmentioning
confidence: 90%
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“…In the numerical simulations of Bradley et al [16] the pressure ratio,P, at the detonation front was found to increase with 3, as dP/d3 = 0.16, within the detonation peninsula. In general, the absence of a reactivity gradient and the mass divergence prevented a developing detonation from propagating outside the hot spot.…”
Section: Engine Operational Regimesmentioning
confidence: 90%
“…Second, at the larger values of t i /t e , the power pulses are no longer uniformly spread, the heat release is spiky and this leads to instabilities in the reaction zone structure [60]. Values of t e , which are less than those of t i , decrease less sharply with an increase in T than those of t i , and there is an associated decrease in t i /t e [14,16,18,33]. Consequently, on both counts, stability tends to be jeopardized at the higher temperatures.…”
Section: Detonation Wavesmentioning
confidence: 99%
“…This features the other relevant dimensionless group formulated in [2,3]. The nature of an autoignition also depends upon the rate at which the heat is released at the end of the delay time [4,13].…”
Section: Excitation Time and The Detonation Peninsulamentioning
confidence: 99%
“…Earlier findings [2,3] from direct numerical simulations, DNS, of hot spot auto-ignitions in 0.5 H 2 /0.5 CO/air mixtures showed a peninsula could be constructed, within which detonations could develop.…”
Section: Introductionmentioning
confidence: 97%
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