Author
G.E. Andrews
Bio: G.E. Andrews is an academic researcher from University of Leeds. The author has contributed to research in topics: Reynolds number & Turbulence. The author has an hindex of 3, co-authored 3 publications receiving 984 citations.
Papers
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TL;DR: In this paper, the variation of burning velocity with equivalence ratio for methane-air mixtures at one atmosphere pressure values were determined by the bombhot wire and corrected density ratio techniques, for combustion during the prepressure period.
431 citations
TL;DR: In this article, a critical survey of different experimental techniques for the measurement of burning velocity is presented, with particular reference to the maximum burning velocity of methane-air mixtures, and recommendations are made as to the most suitable methods of measuring burning velocity for both closed vessels and burners.
363 citations
TL;DR: In this article, the compatibility of theories of turbulence with different turbulent flame models is discussed, and it is suggested that the turbulent Reynolds number, Rλ, of the reactants is an important controlling parameter in turbulent flame propagation.
228 citations
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TL;DR: In this paper, simplified reaction mechanisms for the oxidation of hydrocarbon fuels have been examined using a numerical laminar flame model, and a simple procedure to determine the best values for the reaction rate parameters is demonstrated.
Abstract: Simplified reaction mechanisms for the oxidation of hydrocarbon fuels have been examined using a numerical laminar flame model. The types of mechanisms studied include one and two global reaction steps as well as quasi-global mechanisms. Reaction rate parameters were varied in order to provide the best agreement between computed and experimentally observed flame speeds in selected mixtures of fuel and air. The influences of the various reaction rate parameters on the laminar flame properties have been identified, and a simple procedure to determine the best values for the reaction rate parameters is demonstrated. Fuels studied include n-paraffins from methane to n-decane, some methyl-substituted n-paraffins, acetylene, and representative olefin, alcohol and aromatic hydrocarbons. Results show that the often-employed choice of simultaneous first order fuel and oxidizer dependence for global rate expressions cannot yield the correct dependence of flame speed on equivalence ratio or pressure and can...
2,062 citations
TL;DR: In this paper, the steady laminar counterflow diffusion flame exhibits a very similar scalar structure as unsteady distorted mixing layers in a turbulent flow field, and the conserved scalar model is interpreted as the most basic flamelet structure.
1,933 citations
TL;DR: In this paper, a comprehensive model of high temperature hydrocarbon oxidation in combustion is presented, with emphasis on the hierarchical structure of reaction mechanisms for complex fuels, including both inhibition and promotion of combustion.
1,435 citations
TL;DR: In this paper, an asymptotic nonlinear integrodifferential equation for spontaneous instability of the plane front of a laminar flame is derived, and it is shown that in all cases spontaneous instability implies an increase in its propagation velocity.
1,265 citations
TL;DR: A detailed kinetic mechanism has been developed to simulate the combustion of H2/O2 mixtures, over a wide range of temperatures, pressures, and equivalence ratios as discussed by the authors.
Abstract: A detailed kinetic mechanism has been developed to simulate the combustion of H2/O2 mixtures, over a wide range of temperatures, pressures, and equivalence ratios. Over the series of experiments numerically investigated, the temperature ranged from 298 to 2700 K, the pressure from 0.05 to 87 atm, and the equivalence ratios from 0.2 to 6.
Ignition delay times, flame speeds, and species composition data provide for a stringent test of the chemical kinetic mechanism, all of which are simulated in the current study with varying success. A sensitivity analysis was carried out to determine which reactions were dominating the H2/O2 system at particular conditions of pressure, temperature, and fuel/oxygen/diluent ratios. Overall, good agreement was observed between the model and the wide range of experiments simulated. © 2004 Wiley Periodicals, Inc. Int J Chem Kinet 36: 603–622, 2004
931 citations