Fuel and diluent property effects during wet compression of a fuel aerosol under RCM conditions

Goldsborough, S. Scott; Johnson, Michael; Zhu, Guojun

doi:10.1016/j.fuel.2011.06.027

Cited by 5 publications

(5 citation statements)

References 63 publications

(118 reference statements)

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“…Overall, the change in total evaporation time is small, where this on the order of +5-10%; similar differences are seen for heavier hydrocarbons (e.g., n-hexadecane) while slightly greater discrepancies are seen for water droplets (e.g., 10-15%), as discussed in Ref. [26]. The temperature jump across the free-molecular region for the d T = 0.1 case is on the order of 2-5 K through most of the droplet's lifetime; the jump is $1 K for the d T = 0.9 case.…”

Section: A6 Effects Of Thermodynamic Non-equilibriumsupporting

confidence: 64%

“…It was selected for this study in order to better understand the features of wet compression as it might be applied within an aerosol RCM. A companion study [26] investigates fuels with different boiling curve and transport characteristics, as well as diluent gases which have different thermo-physical properties from nitrogen. Experimental data for q, c p , etc.…”

Section: Model Resultsmentioning

confidence: 99%

“…Systems which can tailor the machine's compression time and compression ratio, as well as the diluent gas composition for a range of fuels could prove versatile for such investigations. A companion study [26] investigates the effects of fuel boiling and transport characteristics as well as diluent gas thermo-physical properties to support future machine design efforts.…”

Section: Discussionmentioning

confidence: 99%

“…In Ref. [26], comparisons are made with water droplets where the Lewis number is significantly different, e.g., Le g $ 0.9; in those cases thermal stratification is more significant than compositional stratification. [12,25].…”

Section: Initial Droplet Sizementioning

confidence: 99%

See 3 more Smart Citations

Gas-phase saturation and evaporative cooling effects during wet compression of a fuel aerosol under RCM conditions

Goldsborough

Johnson

Zhu

2011

Combustion and Flame

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Section: A6 Effects Of Thermodynamic Non-equilibriumsupporting

confidence: 64%

Section: Model Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Initial Droplet Sizementioning

confidence: 99%

See 2 more Smart Citations

Gas-phase saturation and evaporative cooling effects during wet compression of a fuel aerosol under RCM conditions

Goldsborough

Johnson

Zhu

2011

Combustion and Flame

Self Cite

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“…They also noted that the evaluation of the compressed gas temperature can be complicated because of the cooling effects associated with evaporation of the droplets. The concept of aerosol RCMs and the near-droplet phenomena, including evaporation and fuel vapor transport into the surrounding gas were later studied through a droplet vaporization model developed by Goldsborough et al [158,159]. These studies provided guidelines on experimental configurations and the interpretation of data.…”

Section: Aerosol Fueling and Direct Test Chamber Methodsmentioning

confidence: 99%

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

197

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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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A computationally efficient, physics-based model for simulating heat loss during compression and the delay period in RCM experiments

Goldsborough

Banyon

Mittal

2012

Combustion and Flame

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Fuel and diluent property effects during wet compression of a fuel aerosol under RCM conditions

Cited by 5 publications

References 63 publications

Gas-phase saturation and evaporative cooling effects during wet compression of a fuel aerosol under RCM conditions

Gas-phase saturation and evaporative cooling effects during wet compression of a fuel aerosol under RCM conditions

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

A computationally efficient, physics-based model for simulating heat loss during compression and the delay period in RCM experiments

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