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The numerical solution for reaction–diffusion combustion with fuel consumption
Applied Mathematics and Computation, 2005A classical problem concerning the reaction between a gaseous oxidant and a solid porous fuel, including the effects of consumption of the solid fuel of a poisoning of a solid catalyst, is studied numerically in this paper. The initial boundary value problem is presented in Section 2, while the numerical solution with the corresponding results---mostly
M. R. Abd El-Salam, M. H. Shehata
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Hybrid modeling of homogenous gas-phase combustion reactions
Monte Carlo Methods and Applications, 2011Summary: This paper presents a hybrid model (stochastic/deterministic) that describes the time evolution of chemical species in a homogeneous gas-phase combustion reaction process at constant volume. First, currently employed stochastic algorithms are briefly introduced. Next, the development of the hybrid algorithm is detailed.
Terry Brumback, Chien-Pin Chen
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Reaction- and mixing-controlled combustion in scramjet engines
9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999H2-fueled scramjet engines were tested under Mach 4 (M4) to Mach 8 (M8) e ight conditions, and the local equivalenceratio andcombustion efe ciency weremeasured by gassampling attheengineexit.Correlationbetween the local values of equivalence ratio and combustion efe ciency showed that the M4 combustion was principally reaction controlled and the ...
Tohru Mitani +2 more
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Pseudotransient Continuation for Combustion Simulation with Detailed Reaction Mechanisms
SIAM Journal on Scientific Computing, 2016Summary: We study pseudotransient continuation \((\Psi\mathrm{tc})\) as a nonlinear solver for implicit discretizations of combustion problems with detailed chemical models. Detailed models produce extreme stiffness, nonlinearity, and a transient instability associated with ignition/extinction phenomena.
Michael A. Hansen, James C. Sutherland
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Ignited Combustion Criterion of a Reaction
Journal of the Physical Society of Japan, 1992Physical significance of n τ is studied, where n is the number density and τ the confinement time of a reaction. By introducing a fundamental parameter, the ideal and the actual ignited combuson criteria for various reactions are compared. The reason why the hurdle of n τ is very high for nuclear fusion by magnetic confined plasma, while very low for ...
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Simplified Reaction Models for Combustion in Gas Turbine Combustion Chambers
2012The aim of this work is an effective dimension reduction of chemical combustion mechanisms. Despite permanently growing computer power, the simulation of a reaction-diffusion-convection system involving a large scale chemical combustion mechanism is still far from reach. On the other hand, prediction of e.g.
Dirk Lebiedz, Jochen Siehr
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Pressure dependent reactions for atmospheric and combustion models
Chemical Society Reviews, 2008In order to characterize reactions as functions of temperature, pressure (molecular density) and the nature of the species that constitute that molecular density, master equation solutions are required. In this tutorial review, the application of the Multiwell suite of codes to some reactions of interest in atmospheric and combustion chemistry is ...
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