The kinetic model of cyclohexene–air combustion over a wide temperature range

Lu, Hongbiao; Kong, Wenhui; Zhang, Changhua; Wang, Jingbo; Li, Xiangyuan

doi:10.1039/d1ra07122j

Cited by 4 publications

(7 citation statements)

References 65 publications

(50 reference statements)

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“…To further validate the present detailed mechanism, additional kinetic simulations for ignition of cyclohexene are carried out, as shown in Figure 6. It can be seen that the present detailed mechanism also shows acceptable performance for the measured IDTs by Dayma et al, 19 while the results for the experimental results by Lu et al 51 are very good. Major deviations between the simulation results and experimental results are mainly induced by the measured experimental results from different groups, as shown in Figure 7.…”

Section: Extended Validation Of the Updated Mechanismsupporting

confidence: 55%

“…To further validate the present detailed mechanism, additional kinetic simulations for ignition of cyclohexene are carried out, as shown in Figure . It can be seen that the present detailed mechanism also shows acceptable performance for the measured IDTs by Dayma et al, while the results for the experimental results by Lu et al . are very good.…”

Section: Resultsmentioning

confidence: 99%

“…Some of the deviations are mostly probably induced by the different diluent gases and the corresponding concentrations. From both Figures and , it can be seen that our present experimental results are in good consistence with the results by Lu et al The different concentrations of cyclohexane, as shown by Dayma et al., also exhibit a large effect on the measured IDTs. The deviations among the measured IDTs from the three experiments are mainly distributed at high-temperature conditions above 1250 K. Overall, the present work provides an additional experimental IDT result at high-pressure conditions for kinetic model optimization.…”

Section: Resultsmentioning

confidence: 99%

“…Extended validations of the present mechanism for IDTs of cyclohexene: (a) IDTs measured by Dayma et al (Copyright 2003 Wiley) with the averaged pressure of 8.5 bar and (b) IDTs measured by Lu et al (Copyright 2021 RSC).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Experimental and Kinetic Modeling Study on High-Temperature Autoignition of Cyclohexene

Liang

Cao

et al. 2022

ACS Omega

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Cyclohexene is an important intermediate during the oxidation of cycloalkanes, which comprise a significant portion of real fuels. Thus, experimental data sets and kinetic models of cyclohexene play an important role in the understanding of the combustion of cycloalkanes and real fuels. In this work, an experimental and kinetic modeling study of the high-temperature ignition of cyclohexene is performed. Ignition delay time (IDT) measurements are carried out in a high-pressure shock tube (HPST). The studied pressures are 5, 10, and 20 bar; the equivalence ratios are 0.5, 1.0, and 2.0; and the temperatures range from 980 to 1400 K for IDT in HPST. It is shown that the IDTs of cyclohexene exhibit Arrhenius behaviors as a function of temperature, and the IDTs decrease as the equivalence ratio and pressure increase. The experimental results are simulated using three previous detailed kinetic mechanisms and an updated detailed mechanism in this work. The updated detailed kinetic mechanism exhibits good agreement with experimental results. Reaction path analysis and sensitivity analysis are performed to provide insights into the chemical kinetics controlling the ignition of cyclohexene. The results demonstrate that different detailed kinetic mechanisms are significantly different, and there are still no unified conclusions about the major reaction path for cyclohexene oxidation. However, it is worth noting that the abstraction reaction by oxygen at the allylic site and the submechanism of cyclopentene are of significant importance for the accurate prediction of IDTs of cyclohexene. The present experimental data set and kinetic model should be valuable to improve our understanding of the combustion chemistry of cycloalkanes.

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Section: Extended Validation Of the Updated Mechanismsupporting

confidence: 55%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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