Post-induction kinetics in shock-initiated H2−O2 reactions

Hamilton, Charles W.; Schott, Garry L.

doi:10.1016/s0082-0784(67)80188-7

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Let us write a slightly modified system of reactions used in [5], which may contain the above-indicated substances, and the reaction heats calculated from [2]: Experimental and theoretical studies [6][7][8] show that the rates of exchange reactions (I)-(III) in combustible mixtures with sufficiently high temperatures are much greater than the rates of recombination reactions (IV)-(VIII). Reactions (IV)-(VIII) proceed only with participation of the third bodies, and it is these reactions that are mainly responsible for energy release.…”

Section: System Of Reactionsmentioning

confidence: 99%

Method of reconstruction of the chemical composition and combustion efficiency of hydrogen-air mixtures from incomplete experimental data

Topchiyan

2008

Combust Explos Shock Waves

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A principal possibility of approximate reconstruction of the chemical composition in combustion of a hydrogen-air mixture at the end of the scramjet duct from incomplete experimental data (measured concentration of OH radicals and temperature) under the assumption of detailed chemical equilibrium of exchange reactions is analyzed. A closed algebraic system of equations including the concentration of OH radicals and the temperature as parameters is derived in this approximation. A code for solving this system numerically is developed for approximate determination of reaction completeness from the measured temperature and concentration of OH radicals. The model was tested by results of exact thermodynamic calculations of the Jouguet state and overdriven waves in a stoichiometric hydrogen-air mixture and various hydrogen-oxygen mixtures. In the range of pressures of 0.2 to 500 atm and temperatures of 2500 to 3500 K, this method allows the molecular weight and heat release to be reconstructed with accuracy sufficient for gas-dynamic calculations.

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Section: System Of Reactionsmentioning

confidence: 99%

Method of reconstruction of the chemical composition and combustion efficiency of hydrogen-air mixtures from incomplete experimental data

Topchiyan

2008

Combust Explos Shock Waves

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Combustion Kinetic Modeling

Javed

Irfan

Ibrahim

2010

Handbook of Combustion

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Combustion is a complex phenomenon characterized by the interaction and competition of various physical and chemical processes. The correct description of chemical changes requires the application of reaction mechanisms that consist of several hundreds or thousands of elementary reactions. This creates an opportunity for kinetic modeling to play important role in understanding the combustion phenomenon. This chapter provides an overview of combustion modeling, the main aim being to present a comprehensive knowledge base for combustion kinetic modeling. The coupling of fluid dynamics and chemical kinetics using commercial software such as CHEMKIN and FLUENT is also discussed. Moreover, an exemplary approach for reducing complex chemical reaction mechanisms is illustrated with reference to an H 2 + O 2 mixture in an adiabatic system. This approach involves the identification of redundant species via rate sensitivity analysis, and of redundant reactions, by principal component analysis of the rate sensitivity matrix. An eigenvalue–eigenvector analysis is used to extract meaningful kinetic information from linear sensitivity coefficients computed for all species of chemical mechanism at several time points. The main advantage of this method lies in its ability to reveal those parts of the mechanism, which consist of strongly interacting reactions, and to indicate their importance within the mechanism. By using the above procedures, reduced reaction mechanisms could be developed at different chosen conditions and employed in CFD codes in place of detailed mechanisms, giving due consideration to flow fields.

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Chapter 1 The Oxidation of Hydrogen and Carbon Monoxide

Dixon‐Lewis¹,

Williams²

1977

Comprehensive Chemical Kinetics

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Post-induction kinetics in shock-initiated H2−O2 reactions

Cited by 3 publications

References 13 publications

Method of reconstruction of the chemical composition and combustion efficiency of hydrogen-air mixtures from incomplete experimental data

Method of reconstruction of the chemical composition and combustion efficiency of hydrogen-air mixtures from incomplete experimental data

Combustion Kinetic Modeling

Chapter 1 The Oxidation of Hydrogen and Carbon Monoxide

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