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Combustion Modeling of Partially Premixed Flames
Volume 2: Combustion, Fuels and Emissions, Parts A and B, 2010Accurate and properly validated turbulence-chemistry interaction models for RANS combustion computational fluid dynamics (CCFD) simulations are required in support of the development process of modern gas turbine combustors. Although standard models are available for fully premixed and purely non premixed turbulent combustion, models describing ...
Ilona Zimmermann, Michael Pfitzner
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Partially Premixed Combustion in Lifted Turbulent Jets
Combustion Science and Technology, 2000This article reports observations of structures consistent with triple flame reaction zones in the stabilization region of turbulent nonpremixed jet flames. Previous studies of laminar mixing layers and nonpremixed jets show Hi brachial structures, however reports of triple flame structures in turbulent flowfields are sparse, The asymmetric coflow ...
K.M. LYONS, K.A. WATSON
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Experimental Aspects of Partially Premixed Pulsating Combustion
3rd International Energy Conversion Engineering Conference, 2005The pulsating combustion process has won interest in current research due to indications that its application in energy generation can offer several advantages, such as: fuel economy, reduced pollutants formation, increased rate of convective heat transfer and reduced investment, when compared with conventional techniques.
Daniel Ferreira +3 more
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Optimization of Gasoline Partially Premixed Combustion Mode
SAE Technical Paper Series, 2013<div class="section abstract"><div class="htmlview paragraph">Recent works have demonstrated the possibility of operating compression ignition engine with high resistance to auto-ignition fuels as gasoline. By using gasoline and dilution by exhaust gas recirculation, compression ignition can reach high efficiencies and low particulate (PM ...
Mounaïm-Rousselle, Christine +2 more
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Partially premixed diffusion flamelets in non-premixed turbulent combustion
Symposium (International) on Combustion, 1985The structure and extinction of partially premixed diffusion flamelets in a turbulent flow field is analyzed. It is shown that diffusion flamelets are disconnected if the variation of the mixture fraction around stoichiometric is large enough for the corresponding adiabatic flame temperature to be less than a characteristic freezing temperature. At the
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Turbulent flame propagation in partially premixed combustion
Symposium (International) on Combustion, 1998Stratified spark-ignition engines that use direct fuel injection into the combustion chamber feature both small- and large-scale spatial variations in unburned mixture composition. In these configurations, the spark-ignited turbulent flame propagates into a mixture with variable equivalence ratio.
J. Hélie, A. Trouvé
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Gasoline partially premixed combustion, the future of internal combustion engines?
International Journal of Engine Research, 2011Gasoline partially premixed combustion showed the potential of very high efficiency, emissions of nitrogen oxides (NO x) and soot below future emission regulations, and acceptable acoustic noise from idle up to 26 bar gross indicated mean effective pressure.
V Manente, B Johansson, W Cannella
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Model Predictive Control of Partially Premixed Combustion
2010Partially premixed combustion is a compression ignited combustion strategy where high exhaust gas recirculation (EGR) levels in combination with early or late injection timing result in a prolonged ignition delay yielding a more premixed charge than with conventional diesel combustion. With this concept it is possible to get low smoke and NOx emissions
Per Tunestål, Magnus Lewander
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Multidimensional flamelet-generated manifolds for partially premixed combustion
Combustion and Flame, 2010Flamelet-generated manifolds have been restricted so far to premixed or diffusion flame archetypes, even though the resulting tables have been applied to nonpremixed and partially premixed flame simulations. By using a projection of the full set of mass conservation species balance equations into a restricted subset of the composition space, unsteady ...
Nguyen, Phuc-Danh +3 more
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Emissions and Soot in Partially Premixed Combustion
2014Practical combustion systems typically undergo non-premixed mode of combustion, in which the fuel is injected directly into the combustion chamber, which already has compressed air. The emissions tend to be high in this diffusion mode of combustion as compared to premixing mode.
Surbhi Kohli, Abhijit Kushari
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