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Simulation of swirl-stabilized turbulent partially premixed combustion
Numerical Heat Transfer, Part A: Applications, 2017ABSTRACTProperly describing turbulence-complex reaction interactions is crucial for predicting turbulent combustion and pollutant emission. A presumed probability density function model for temperature fluctuation is adopted in the present paper. It incorporates a 25-step skeletal mechanism for methane combustion.
Weiping Yang, Jian Zhang
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Numerical Simulations of Partially Premixed Turbulent Combustion
2002Turbulent flame propagation through non-homogeneous reactant mixtures is investigated using high-resolution two-dimensional numerical simulation, including detailed chemical kinetics and molecular transport. Systematic variations in the distribution of reactant composition are imposed, and the effect of these variations on the primary propagating flame,
D. C. Haworth +4 more
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Sensitivity Analysis Study on Ethanol Partially Premixed Combustion
SAE International Journal of Engines, 2013<div class="section abstract"><div class="htmlview paragraph">Partially Premixed Combustion (PPC) is a combustion concept which aims to provide combustion with low smoke and NOx with high thermal efficiency. Extending the ignition delay to enhance the premixing, avoiding spray-driven combustion and controlling the combustion temperature at ...
Mehrzad Kaiadi +3 more
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Turbulent non-premixed combustion in partially premixed diffusion flamelets with detailed chemistry
Symposium (International) on Combustion, 1988The formulation of an extended laminar flamelet model of non-premixed turbulent combustion is developed. The microscopic elements in the turbulent ensemble are taken as laminar diffusion flamelets that are distinguished by the extent of stretching to which they are exposed and, additionally, by the degree to which their reactants are premixed ...
B. Rogg, F. Behrendt, J. Warnatz
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Modeling partially premixed combustion behavior in multiphase LES
Combustion and Flame, 2015Abstract A partially premixed flamelet model is extended to account for liquid fuel, and its accuracy and dependence on spray modeling inputs are investigated. The spray and combustion model coupling is considered by simulating single drop evaporation experiments. These simulations confirmed previous findings showing that small changes in spray model
Edward Knudsen +2 more
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Correlating Flame Location and Ignition Delay in Partially Premixed Combustion
SAE Technical Paper Series, 2012<div class="section abstract"><div class="htmlview paragraph">Controlling ignition delay is the key to successfully enable partially premixed combustion in diesel engines. This paper presents experimental results of partially premixed combustion in an optically accessible engine, using primary reference fuels in combination with artificial ...
Zegers, R.P.C. +5 more
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Numerical Simulation of Partially Premixed Combustion using the Flamelet Approach
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1999AbstractPartially premixed combustion in the flamelet regime as simulated using the two‐scalar level set approach. It combines the flamelet models developed for non‐premixed and premixed Combustion. In the flamelet regime the calculation of the chemical processes can be separated from the pow calculation, so that the flow solver need not resolve any ...
Herrmann, M. +3 more
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Triple flames and partially premixed combustion in autoignition of non-premixed turbulent mixtures
Symposium (International) on Combustion, 1996The present work deals with autoignition of non-premixed turbulent mixtures. The objective is to study the possible role that partially premixed combustion may play in the propagation of ignition. First, a physical picture based on simple considerations and describing the structure of the flame very early after ignition is discussed.
Domingo, Pascale, Vervisch, L.
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Non-premixed and Partially Premixed Combustion Modeling
2021C. Fureby, X.-S. Bai
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Autoignition of Nonpremixed Turbulent Mixtures: Partially Premixed Combustion
1997Autoignition of nonpremixed turbulent mixtures undergoing a compression is studied by using DNS. The temporal evolution of the mean amount of heat released during ignition is used to distinguish between different ignition regimes. In particular, nonuniform distribution of mixture fraction dissipation rate along the stoichiometric line contributes to ...
P. Domingo, L. Vervisch
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