Experimental and numerical studies of ditertiary butyl peroxide combustion at high pressures in a rapid compression machine

Griffiths, J. F.; Jiao, Qi; Kordylewski, W.; Schreiber, M.; Meyer, Jason; Knoche, K. F.

doi:10.1016/0010-2180(93)90111-f

Cited by 51 publications

(29 citation statements)

References 11 publications

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“…While the overall compression process is non-isentropic, is it realistic to assume that a core region of the compressed gas is unaffected by heat transfer at the walls and is compressed in an isentropic manner as suggested by other RCF researchers [29]. Having such a core region is necessary to support the assumption that conditions within the (reacting) gas mixture can be treated as (spatially) uniform.…”

Section: Experimental Modelingmentioning

confidence: 99%

Demonstration of a free-piston rapid compression facility for the study of high temperature combustion phenomena

Donovan

Zigler

et al. 2004

Combustion and Flame

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A free-piston rapid-compression facility (RCF) has been developed at the University of Michigan (UM) for use in studying high-temperature combustion phenomena, including gasphase combustion synthesis and homogeneous charge compression ignition systems. The facility is designed to rapidly compress a mixture of test gases in a nearly adiabatic process. A range of compression ratios, currently 16 to 37, can be obtained. The high temperatures and pressures generated by the RCF can be maintained for in excess of 50 ms, providing an order of magnitude increase in observation time over what can be obtained using shock tubes. The facility is instrumented for temperature and pressure measurements as well as optical access for use with laser and other optical diagnostics. This work describes the UM-RCF and its operation, establishes obtainable pressures and temperatures (over 1900 kPa and 970 K for predominately N 2 gas mixtures, and over 785 kPa and 2000 K for Ar gas mixtures), and demonstrates the repeatability of the UM-RCF experiments (< 3% run-to-run variability in peak pressure) for combustion studies. The experimental results for time histories of temperature and pressure are interpreted using analytical isentropic models. Comparison between the isentropic predictions and the experimental data indicate excellent agreement and support the conclusion that the core region of the test gases is nominally uniform and is compressed isentropically.2

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Section: Experimental Modelingmentioning

confidence: 99%

Demonstration of a free-piston rapid compression facility for the study of high temperature combustion phenomena

Donovan

Zigler

et al. 2004

Combustion and Flame

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“…The corresponding physical processes are also different. Use of a flat piston leads to enormous piston motion induced roll-up vortex and temperature non-homogeneity [9][10][11][12][13][14][15][16][17]. This fluid mechanical effect is particularly complicated because it does not even show up in the pressure trace and there is no easy way to account for it.…”

Section: Introductionmentioning

confidence: 96%

Effect of crevice mass transfer in a rapid compression machine

Mittal

Chomier

2014

Combustion and Flame

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“…Although the actual pressure and temperature are lower than those achieved for isentropic compression, various studies [e.g., 21,22] have shown that it is reasonable to assume an isentropically-compressed core region of the gas mixture, with the effective compression ratio being modified by heat transfer to the wall. Based on the adiabatic core hypothesis, the temperature at the end of compression, T C , is determined by using the actual pressure at the end of compression, P C , which is measured using a pressure transducer.…”

Section: Introductionmentioning

confidence: 99%

“…Griffiths et al [21] numerically showed that the hot core region generated at the end of compression is virtually isentropic and spans approximately 70% of the volume of the combustion chamber at the end of compression in their facility. The differences observed between computational results using spatially uniform conditions (i.e.…”

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Using rapid compression machines for chemical kinetics studies

Sung¹,

Curran²

2014

Progress in Energy and Combustion Science

243

127

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Rapid compression machines (RCMs) are used to simulate a single compression stroke of an internal combustion engine without some of the complicated swirl bowl geometry, cycle-to-cycle variation, residual gas, and other complications associated with engine operating conditions. RCMs are primarily used to measure ignition delay times as a function of temperature, pressure, and fuel/oxygen/diluent ratio; further they can be equipped with diagnostics to determine the temperature and flow fields inside the reaction chamber and to measure the concentrations of reactant, intermediate, and product species produced during combustion. This paper first discusses the operational principles and design features of RCMs, including the use of creviced pistons, which is an important feature in order to suppress the boundary layer, preventing it from becoming entrained into the reaction chamber via a roll-up vortex. The paper then discusses methods by which experiments performed in RCMs are interpreted and simulated. Furthermore, differences in measured ignition delays from RCMs and shock tube facilities are discussed, with the apparent initial gross disagreement being explained by facility effects in both types of experiments. Finally, future directions for using RCMs in chemical kinetics studies are also discussed.

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Experimental and numerical studies of ditertiary butyl peroxide combustion at high pressures in a rapid compression machine

Cited by 51 publications

References 11 publications

Demonstration of a free-piston rapid compression facility for the study of high temperature combustion phenomena

Demonstration of a free-piston rapid compression facility for the study of high temperature combustion phenomena

Effect of crevice mass transfer in a rapid compression machine

Using rapid compression machines for chemical kinetics studies

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