Experimental and Numerical Study of the Influence of Temperature Heterogeneities on Self-Ignition Process of Methane-Air Mixtures in a Rapid Compression Machine

Strozzi, Camille; Sotton, Julien; Mura, Arnaud; Bellenoue, Marc

doi:10.1080/00102200802260656

Cited by 27 publications

(18 citation statements)

References 21 publications

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“…Strozzi and co-workers [122,126,215] and Guibert and co-workers [113,240] [249] and Sankaran et al [290]. Fairly good correlation was found for the delineation between spontaneous autoignition and deflagrative propagation, except during the later stages of heat release, while these modes were significantly dependent on the local gradients in temperature and reactivity.…”

Section: Turbulence-chemistry Interactionsmentioning

confidence: 87%

“…These devices employ a moving cam to couple the motion of the driving piston with the motion of the compressing piston, where the advantage is precise control over the piston velocity and compression ratio, although relatively longer compression times typically result (C > 30 ms). With an arrangement of this type, a range of piston trajectories can be easily prescribed by utilizing different cam profiles [125,126]. Before compression, the driving piston is usually kept in place by a hydraulic jack while the driving chamber is pressurized.…”

Section: Control Of the Compression Phasementioning

confidence: 99%

“…The schlieren imaging data of Griffiths et al [212], similar to earlier results [69,106], showed spatial aspects to ignition of n-pentane and the formation of ignition kernels. Later work by Strozzi et al [126] used qualitative schlieren imaging to show the formation of rollup vortices at the corners of the piston and test chamber for their square cross-sectioned, flat piston RCM.…”

Section: Schlieren Techniquesmentioning

confidence: 99%

“…Strozzi et al [126] employed a transported probability distribution function (PDF) approach, where molecular diffusion, chemical production, heat transfer and exothermicity perturb the statistics based on the local conditions. Monte Carlo methods can be used to solve the PDF equation, and Strozzi et al…”

Section: Non-uniform Reactor Modelsmentioning

confidence: 99%

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Advances in rapid compression machine studies of low- and intermediate-temperature autoignition phenomena

Goldsborough

Hochgreb

Vanhove

et al. 2017

Progress in Energy and Combustion Science

206

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Rapid compression machines (RCMs) are widely-used to acquire experimental insights into fuel autoignition and pollutant formation chemistry, especially at conditions relevant to current and future combustion technologies. RCM studies emphasize important experimental regimes, characterized by lowto intermediate-temperatures (600-1200 K) and moderate to high pressures (5-80 bar). At these conditions, which are directly relevant to modern combustion schemes including low temperature combustion (LTC) for internal combustion engines and dry low emissions (DLE) for gas turbine engines, combustion chemistry exhibits complex and experimentally challenging behaviors such as the chemistry attributed to cool flame behavior and the negative temperature coefficient regime. Challenges for studying this regime include that experimental observations can be more sensitive to coupled physicalchemical processes leading to phenomena such as mixed deflagrative/autoignitive combustion. Experimental strategies which leverage the strengths of RCMs have been developed in recent years to make RCMs particularly well suited for elucidating LTC and DLE chemistry, as well as convolved physicalchemical processes. Specifically, this work presents a review of experimental and computational efforts applying RCMs to study autoignition phenomena, and the insights gained through these efforts. A brief history of RCM development is presented towards the steady improvement in design, characterization, instrumentation and data analysis. Novel experimental approaches and measurement techniques, coordinated with computational methods are described which have expanded the utility of RCMs beyond empirical studies of explosion limits to increasingly detailed understanding of autoignition chemistry and the role of physical-chemical interactions. Fundamental insight into the autoignition chemistry of specific fuels is described, demonstrating the extent of knowledge of low-temperature chemistry derived from RCM studies, from simple hydrocarbons to multi-component blends and full-boiling range fuels. Emerging needs and further opportunities are suggested, including investigations of under-explored fuels and the implementation of increasingly higher fidelity diagnostics.

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Section: Turbulence-chemistry Interactionsmentioning

confidence: 87%

Section: Control Of the Compression Phasementioning

confidence: 99%

Section: Schlieren Techniquesmentioning

confidence: 99%

Section: Non-uniform Reactor Modelsmentioning

confidence: 99%

See 2 more Smart Citations

Advances in rapid compression machine studies of low- and intermediate-temperature autoignition phenomena

Goldsborough

Hochgreb

Vanhove

et al. 2017

Progress in Energy and Combustion Science

206

View full text Add to dashboard Cite

show abstract

“…In single-cylinder or multi-cylinder engines, it is very difficult to control the combustion, because parameters are coupled with each other under engine operating conditions. For this reason, the use of a rapid compression machine (RCM) allows to elucidate about combustion characteristics and visualize combustion phenomena [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%