Results 211 to 220 of about 6,488 (253)

Partial premixing and stratification in turbulent flames

Proceedings of the Combustion Institute, 2015
Abstract 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 ...
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Combustion Modeling of Partially Premixed Flames

Volume 2: Combustion, Fuels and Emissions, Parts A and B, 2010
Accurate 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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Turbulent non-premixed combustion in partially premixed diffusion flamelets with detailed chemistry

Symposium (International) on Combustion, 1988
The 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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Premixed and Partial Premixed Turbulent Flames at High Reynolds Number

2018
Methane/air premixed and partially premixed turbulent flames at high Reynolds number are characterized using Direct Numerical Simulations (DNS) with detailed chemistry in a spatially evolving slot Bunsen configuration. Two sets of simulations are performed. A first set of simulations with fully premixed inlet conditions is considered in order to assess
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Triple flames and partially premixed combustion in autoignition of non-premixed turbulent mixtures

Symposium (International) on Combustion, 1996
The 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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Fuel Effect on Combustion Stratification in Partially Premixed Combustion

SAE Technical Paper Series, 2017
<div class="section abstract"><div class="htmlview paragraph">The literature study on PPC in optical engine reveals investigations on OH chemiluminescence and combustion stratification. So far, mostly PRF fuel is studied and it is worthwhile to examine the effect of fuel properties on PPC.
Vedharaj, S., Vallinayagam, R., An, Y., Dawood, A., Izadi Najafabadi, M., Somers, L.M.T., Chang, J., Johansson, B.   +7 more
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Structure and extinction of heptane/air partially premixed flames

AIAA Journal, 2002
A numerical investigation of the structure and extinction of n-heptane/air partially premixed e ames in a countere ow cone guration is reported. The e ame is computed using a detailed reaction mechanism consisting of 275 elementary reactions and 41 species.
Hongshe Xue, Suresh K. Aggarwal
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Fuel effects on NOx emissions in partially premixed flames

Combustion and Flame, 2004
Abstract The requirement to significantly reduce NOx and particulate emissions while maintaining combustor performance is one of the main drivers for internal combustion engine research. Partially premixing and using fuel blends represent two promising approaches for reducing both the NOx and the particulate emissions from flames.
Suresh Aggarwal, Sayangdev Naha
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Modeling partially premixed turbulent combustion

2001
This paper investigates the process of partially premixed turbulent combustion in situations where the fuel is provided either as a liquid spray or a purely gaseous stream. In the former case, two-dimensional direct numerical simulations in association with a Lagrangian solver for the dispersed vaporizing phase are employed.
M. Herrmann, M. Chen, B. Binninger, N. Peters, V. Favier, J. Réveillon, L. Vervisch   +6 more
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Non-premixed and Partially Premixed Combustion Modeling

2021
C. Fureby, X.-S. Bai
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