Results 41 to 50 of about 15,463 (219)

A Two-Fluid Conditional Averaging Paradigm for the Theory and Modeling of Turbulent Premixed Combustion

Journal of Combustion, 2019
This paper extends a recent theoretical study that was previously presented in the form of a brief communication (Zimont, C&F, 192, 2018, 221-223), in which we proposed a simple splitting method for the derivation of two-fluid conditionally averaged ...
Vladimir L. Zimont
doaj   +1 more source

Using LES to Study Reacting Flows and Instabilities in Annular Combustion Chambers [PDF]

, 2012
Great prominence is put on the design of aeronautical gas turbines due to increasingly stringent regulations and the need to tackle rising fuel prices.
A Giauque, A Roux, A Roux, A Sengissen, C Fureby, C Martin, F Nicoud, G Boudier, G Boudier, G Boudier, G Staffelbach, Gabriel Staffelbach, H Pitsch, J Smagorinsky, JM Senoner, L Benoit, L Selle, L Selle, Laurent Y. M. Gicquel, M Boileau, N Gourdain, O Colin, O Colin, P Moin, P Sagaut, P Schmitt, P Wolf, Pierre Wolf, Ramesh Balakrishnan, S Ghosal, S Mendez, S Roux, T Poinsot, T Poinsot, Thierry Poinsot, V Moureau, Y Huang   +36 more
core   +4 more sources

Two-Dimensional Tomographic Simultaneous Multi-Species Visualization—Part I: Experimental Methodology and Application to Laminar and Turbulent Flames

Energies, 2020
In recent years, the tomographic visualization of laminar and turbulent flames has received much attention due to the possibility of observing combustion processes on-line and with high temporal resolution.
Thomas Häber, Henning Bockhorn, Rainer Suntz   +2 more
doaj   +1 more source

Conceptual Limitations of the Probability Density Function Method for Modeling Turbulent Premixed Combustion and Closed-Form Description of Chemical Reactions’ Effects

Fluids, 2021
In this paper, we critically analyzed possibilities of probability density function (PDF) methods for the closed-form description of combustion chemical effects in turbulent premixed flames.
Vladimir L. Zimont
doaj   +1 more source

A Similarity Subgrid Model for Premixed Turbulent Combustion [PDF]

Flow, Turbulence and Combustion, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Vreman, A.W., Bastiaans, R.J.M., Geurts, B.J.   +2 more
openaire   +1 more source

LES evaluation of the effects of equivalence ratio fluctuations on the dynamic flame response in a real gas turbine combustion chamber [PDF]

, 2013
Large Eddy Simulations (LES) of a lean swirl-stabilized gas turbine burner are used to analyze mechanisms triggering combustion instabilities. To separately study the effect of velocity and equivalence ratio fluctuations, two LES of the same geometry are
Gicquel, Laurent Y.M., Hermeth, Sebastian, Poinsot, Thierry, Staffelbach, Gabriel   +3 more
core   +4 more sources

Modelling flame turbulence interaction in RANS simulation of premixed turbulent combustion [PDF]

Combustion Theory and Modelling, 2015
Flame turbulence interaction (FTI) is an important term for modelling scalar dissipation in premixed turbulent combustion. In order to obtain an accurate representation of the flame turbulence interaction phenomenon, an evolution equation for FTI has recently been proposed.
Ahmed U, Prosser R
openaire   +3 more sources

Investigations on conical lean turbulent premixed hydrogenated natural gas flames

Fuel Communications
Hydrogen's ability to enhance carbon neutrality in combustion processes puts forward the use of hydrogenated fuels, both in the form of fuel and an energy carrier as a potential decarbonization solution.
Dilay Güleryüz, Christophe Allouis, İskender Gökalp   +2 more
doaj   +1 more source

DNS and Combined Laser Diagnostics of Turbulent Combustion

Journal of Thermal Science and Technology, 2008
With the developments of computer technologies, three-dimensional direct numerical simulations (DNS) of turbulent combustion have been realized with a detailed or reduced kinetic mechanism.
Mamoru TANAHASHI, Makoto SATO, Masayasu SHIMURA, Toshio MIYAUCHI   +3 more
doaj   +1 more source

Effects of Mean Inflow Velocity and Droplet Diameter on the Propagation of Turbulent V-Shaped Flames in Droplet-Laden Mixtures

Fluids, 2020
Three-dimensional carrier phase Direct Numerical Simulations of V-shaped n-heptane spray flames have been performed for different initially mono-sized droplet diameters to investigate the influence of mean flow velocity on the burning rate and flame ...
Gulcan Ozel Erol, Nilanjan Chakraborty
doaj   +1 more source