The effect of heating rates on low temperature hexane air combustion

Boettcher, Philipp; Mével, Rémy; Thomas, Vaughan; Shepherd, Joseph E.

doi:10.1016/j.fuel.2011.12.044

Cited by 29 publications

(34 citation statements)

References 28 publications

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“…Adler analyzed the problem of a circular hot spot in contact with reactive mixture using a two‐dimensional steady simulations. Boettcher researched the effect of hot surface area on ignition temperature using one‐step and detailed chemical reactive models. Marengo et al systematically investigated the effects of different hot surface materials on hydrogen oxidation.…”

Section: Introductionmentioning

confidence: 99%

“…Adler 19 analyzed the problem of a circular hot spot in contact with reactive mixture using a twodimensional steady simulations. Boettcher 20 researched the effect of hot surface area on ignition temperature using one-step and detailed chemical reactive models. Marengo et al 21 23 measured the hot-surface temperature at the point of ignition of n-hexane/air mixture in a rectangular prism combustion chamber using a fast heating glow plug for equivalence ratios ranging from 0.6 to 3 and chamber pressures varying from 25 to 100 kPa.…”

Section: Introductionmentioning

confidence: 99%

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Research on the hot surface ignition of hydrogen-air mixture under different influencing factors

Yang

Wang

2018

Int J Energy Res

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Summary To further reveal the pre‐ignition characteristics of hydrogen internal combustion engine, the effect of hot surface characteristic parameters on the ignition characteristics of hydrogen‐air mixture was investigated in this research. Based on the prototype of the constant volume combustion bomb with an overhead glow plug, the duration from the heating of the hot surface to the combustion of hydrogen‐air mixture, the so‐called heating duration, was firstly researched under different fuel‐air equivalence ratio, initial temperature, initial pressure, hot surface temperature, and hot surface area, and the influence of each factor on the heating duration was analyzed. The results show that the order of the effect of each factor on the hot surface ignition is as follows: hot surface temperature > initial pressure of hydrogen‐air mixture > equivalent ratio > initial temperature of hydrogen‐air mixture > hot surface area. The influence of the hot surface characteristic parameters on the heating duration was further analyzed in detail. On this basis, the relationship among the critical ignition temperature, the heating duration and the hot surface area was researched and established. The results show that the heating duration is the only major factor affecting the critical ignition temperature. Finally, the research results were applied to analysis the pre‐ignition in hydrogen internal combustion engine.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on the hot surface ignition of hydrogen-air mixture under different influencing factors

Yang

Wang

2018

Int J Energy Res

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“…The wavelength of the laser diode light can be tuned over few nm by adjusting the injection current and the temperature of the diode. The experimental arrangement for the wavelength-modulation spectroscopy measurements has been previously described [1]. Briefly, it consists of a signal generator, a summing amplifier, a laser diode with current and …”

Section: Methodsmentioning

confidence: 99%

“…Only the C6 basis of the reaction model, 2628 reactions and 531 species, was used for the present study. A similar approach was previously adopted in our laboratory and proved satisfactory to study the effect of heating rate on the low temperature oxidation of hexane-air mix-tures [1]. The modeling was performed with the Cantera software [13] using a constant pressure, pseudo-1D plug flow reactor model.…”

Section: Modelingmentioning

confidence: 99%

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Low temperature oxidation of n-hexane in a flow reactor

Mével

Chatelain

Boettcher

et al. 2014

Fuel

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The risk of igniting a flammable mixture in fuel tank vapor space is a major concern in aviation safety. In order to analyze the hazards and develop mitigation strategies, it is necessary to characterize the explosive properties of kerosene vapor-air mixtures over wide ranges of initial conditions. n-Hexane has been extensively used in our laboratory as a single component surrogate of kerosene. In the present study, hexane oxidation by oxygen was studied in a flow reactor at equivalence ratios of 0.7, 1 and 1.5 for mixtures diluted at 90% with nitrogen. Residence time was set at 2 s and the pressure at 100 kPa. The evolution of the gas phase composition at the reactor exit was studied over the range 450-1000 K. Laser-based diagnostics and gas chromatography analysis were used to characterize the exit mixture composition. The chemical species measurements revealed three distinct regimes of oxidation, namely (i) the cool flame region from 600 to 650 K, (ii) the NTC region between 675 and 775 K, and (iii) the high temperature oxidation regime from 800 K. The modeling study demonstrated the capability of reproducing most of the trends observed

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The effect of base chemistry choice in a generated n‐hexane oxidation model using an automated mechanism generator

Hilbig

Malliotakis

Seidel³

et al. 2019

Int J of Chemical Kinetics

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The present study describes the utilization of a reaction mechanism generator for the development of chemical kinetic models. The aim of the investigation is twofold. The in‐house developed mechanism generator is updated with reaction classes reported in the literature, and the effect of the lower hydrocarbon chemistry, that is, base chemistry, on the generation process is assessed. For this purpose, the algorithm is implemented on two different base chemistry mechanisms, that have previously been validated against a different range of hydrocarbons, that is, the mechanisms of the groups coauthoring the study. n‐Hexane has been used as a modeling target due to its important role in combustion studies as a surrogate for engine and aviation applications. The steps of the generation process are given in detail as this is the first time the current algorithm is utilized. The two generated mechanisms are compared against speciation data, ignition delay times, and flame velocities from the literature. The overall agreement of the generated mechanisms is satisfying; discrepancies exist in the negative temperature coefficient regime. Reaction path analysis and sensitivity analysis were performed, revealing the reactions that cause the different mechanism performance. Among others, the study reveals that the generated schemes pose a fast and adequate alternative to literature mechanisms; it is however evident that the latter may include more detailed reaction paths and are therefore superior in terms of validation.

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The effect of heating rates on low temperature hexane air combustion

Cited by 29 publications

References 28 publications

Research on the hot surface ignition of hydrogen-air mixture under different influencing factors

Research on the hot surface ignition of hydrogen-air mixture under different influencing factors

Low temperature oxidation of n-hexane in a flow reactor

The effect of base chemistry choice in a generated n‐hexane oxidation model using an automated mechanism generator

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