Results 141 to 150 of about 562 (182)
Some of the next articles are maybe not open access.
Partial premixing and stratification in turbulent flames
Proceedings of the Combustion Institute, 2015Abstract This paper reviews recent advances in understanding the structure of turbulent partially premixed and stratified flames. The term “partially premixed” refers here to compositionally inhomogeneous mixtures that include flammable and non-flammable fluid while “stratified” combustion refers to a reacting front propagating through a range of ...
openaire +1 more source
Multiple mapping conditioning for flames with partial premixing
Combustion and Flame, 2008Fully closed multiple mapping conditioning (MMC) is used to model partially premixed flames in homogeneous, isotropic decaying turbulence where the partial premixing is caused by local extinction and reignition phenomena. Two reference variables that represent mixing and reaction progress, such as mixture fraction and sensible enthalpy, are used to ...
Kronenburg, A., Cleary, M. J.
openaire +3 more sources
A study of partially premixed unconfined propane flames
Combustion and Flame, 1994Unconfined turbulent partially premixed propane/air flames issuing from a straight tube into quiescent air at atmospheric pressure and temperature are investigated. Experiments on lifted flames are performed. Flame height and liftoff are reported together with emission indices for oxides of nitrogen (NO[sub 3]).
Nils A. Røkke +2 more
openaire +1 more source
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
openaire +1 more source
An Experimental Investigation of Scalar Mixing and Flame Structure of a Partially Premixed Flame
Combustion Science and Technology, 2020Experimental investigation of a partially premixed flame stabilized in a combination of bluff body and swirling flowfields is reported.
Rajesh Sadanandan +4 more
openaire +1 more source
Effect of pressure on counterflow H2–air partially premixed flames
Combustion and Flame, 2005A computational investigation of high-pressure hydrogen–air partially premixed flames (PPFs) is reported to characterize the effect of pressure on the flame structure, and the relevance of reaction limits for these flames. The flames are computed using the Mueller mechanism consisting of 19 elementary reactions and 9 species. Although the mechanism has
Alejandro Briones +2 more
openaire +1 more source
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
openaire +2 more sources
Numerical and experimental study of no emission in laminar partially premixed flames
Proceedings of the Combustion Institute, 2000A partially premixed methane/air flame in a two-dimensional configuration was studied in this work. The configuration was close to those used in real domestic boilers. The flame structure and flow pattern were calculated by implementing a complex chemistry and detailed transport formulation in an industrial computational fluid dynamics code (ESTET).
Gicquel, Olivier +5 more
openaire +2 more sources
Partially Premixed Laminar Gas Flames from Triangular Burners
Journal of Propulsion and Power, 1996An experimental study of the effects of using triangular burner exit ports in place of the standard circular ports in a laminar partially premixed gas burner is presented. A natural gas burner employed in a small residential-scale heating system rated at 5.86 kW was modie ed. Air entrainment into the nonburning jets, emission indices of nitrogen oxides
S. Gollahalli, Samir Subba
openaire +1 more source
A numerical investigation of the flame structure of an unsteady inverse partially premixed flame
Combustion and Flame, 1997Abstract The flame structure of unsteady flickering partially premixed flames is numerically investigated, and detailed results are provided for a flame established at Fr = 0.5, Re = 500, and overall Φ = 1. A numerical study is conducted in an inverse configuration in which a fuel-rich (CH4-air) annular jet is sandwiched between an axisymmetric air ...
Zhuang Shu +3 more
openaire +1 more source