Stability of acetylene–propane–butane and acetylene–hydrogen gas mixtures subjected to shock wave action

Головастов, С. В.; Golub, V. V.; Mikushkin, A.Yu.

doi:10.1016/j.fuel.2014.02.067

Cited by 5 publications

(5 citation statements)

References 17 publications

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“…The lack of the experimental data for concentrations of hydrogen and a propane-butane mixture larger than that shown in Figure 2 is due to the nature of a sharp inhibition of self-decomposition of acetylene; i.e., with a propane-butane concentration greater than 6% (υ) at an initial pressure of 0.10 MPa, and more than 14% (υ) at an initial pressure of 0.25 MPa, there was a full inhibition of spontaneous decomposition of acetylene (Golovastov et al, 2014). Therefore, data on the induction period was not obtained.…”

Section: Figurementioning

confidence: 82%

“…The scheme of the experimental set-up, X-t-diagram of shock waves and the methodology are described in detail in (Golovastov et al, 2014, Golovastov et al, 2008. It was a shock tube of A c c e p t e d M a n u s c r i p t 4 internal diameter of 20 mm.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…It was evaluated by gas-dynamic equations. The accuracy and adequacy of the estimated values of the temperature are given in (Golovastov et al, 2014). …”

Section: Experimental Methodsmentioning

confidence: 99%

“…The process of pyrolysis is directly related to the process of explosive self-decomposition. A review of the pyrolysis in binary mixtures and pure acetylene diluted with an inert gas, is presented in more detail in our previous work (Golovastov et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Non-Monotonous Influence of Admixtures of Propane-Butane Mixture or Hydrogen on Induction Periods of Anoxic Decomposition of Acetylene

Головастов

Bivol

2016

Combustion Science and Technology

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Induction periods of self-decomposition of anoxic acetylene diluted by a propane-butane mixture or hydrogen were measured experimentally behind incident and reflected shock waves. A source of the shock wave was provided by a detonation wave that was initiated in a stoichiometric acetylene-oxygen mixture, and then changed to the shock wave in investigated mixtures of acetylene with admixtures. Produced shock waves had an intensity 3.0-9.0 MPa at duration 100-1000 μs. Dependence of the induction period of detonation of acetylene on temperature behind the incident/reflected shock wave was presented. Induction periods were obtained for the acetylene mixtures undiluted by inert gases at initial pressures 0.1 MPa and 0.25 MPa, and degrees of compression 10-20. It was shown that the induction period has a minimal value at a non-zero concentration of admixture.

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Section: Figurementioning

confidence: 82%

Section: Experimental Methodsmentioning

confidence: 99%

“…It was evaluated by gas-dynamic equations. The accuracy and adequacy of the estimated values of the temperature are given in (Golovastov et al, 2014). …”

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Non-Monotonous Influence of Admixtures of Propane-Butane Mixture or Hydrogen on Induction Periods of Anoxic Decomposition of Acetylene

Головастов

Bivol

2016

Combustion Science and Technology

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“…Classification of smoked foils as ''regular'' and ''irregular'' is subjective and qualitative. Although the effect of Ar dilution on cellular structure has been qualitatively studied, 7,8 the degrees of detonation instability of different argon dilution are showing a great deal of varieties from the irregularity of cellular structure recorded on smoked foils. This degree still needs some parameters to present for stable and unstable detonation.…”

Section: Introductionmentioning

confidence: 99%

Quantitative effect of Ar dilution on the dynamic detonation parameters in acetylene–oxygen mixtures

Zhao¹,

Yan²,

Zhang³

2018

Advances in Mechanical Engineering

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In order to clarify the effect of Ar dilution on the dynamic parameters of detonation quantitative, smoked foil records of C 2 H 2-O 2 with different Ar dilutions are investigated. With the Ar concentration increasing, the instability will decrease and detonation can fail more easily. Histograms, variance measurements, and studies of the autocorrelation function are systematically considered to quantitative define the irregularity parameters. The other kinetics characteristics, such as detonation limits, velocity, and cell size, are also analyzed to illustrate the dilution effects via the smoke foils from different Ar dilution. It was found that the results from histograms, variance studies, and the autocorrelation function consistently show the tendency that mixtures with different Ar dilutions exhibited different degrees of irregularity. Quantitative irregularity can be examined by the values of the ratio Max discrepancy/Relevant mean cell size of C 2 H 2 + 2.5O 2. For the mixtures with higher Ar concentration, the main cell size shown by the peak in the histogram and the first peak of the autocorrelation function were much closer to the cell size measured visually because of the stronger dominant mode and more regular trajectory of triple-point patterns. Predictions of the cell size considering the participation of Ar in the mixtures were also given.

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Mechanism and safety analysis of acetylene decomposition explosion: A combined ReaxFF MD with DFT study

Zhang

Zhou

Chen

et al. 2022

Fuel

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Stability of acetylene–propane–butane and acetylene–hydrogen gas mixtures subjected to shock wave action

Cited by 5 publications

References 17 publications

Non-Monotonous Influence of Admixtures of Propane-Butane Mixture or Hydrogen on Induction Periods of Anoxic Decomposition of Acetylene

Non-Monotonous Influence of Admixtures of Propane-Butane Mixture or Hydrogen on Induction Periods of Anoxic Decomposition of Acetylene

Quantitative effect of Ar dilution on the dynamic detonation parameters in acetylene–oxygen mixtures

Mechanism and safety analysis of acetylene decomposition explosion: A combined ReaxFF MD with DFT study

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