Results 251 to 260 of about 125,081 (296)

Modeling of PCCI combustion with FGM tabulated chemistry

Fuel, 2014
Premixed Charge Compression Ignition (PCCI) is a new combustion concept aiming a simultaneous reduction of oxides of nitrogen and soot emissions. Therefore the operation focuses on improved fuel–air mixing before ignition and lower maximum in-cylinder temperatures during the complete engine cycle.
Egüz, U., Leermakers, C.A.J., Somers, L.M.T., Goey, de, L.P.H.   +3 more
openaire   +2 more sources

Modeling nonadiabatic turbulent premixed reactive flows including tabulated chemistry

Combustion and Flame, 2005
A two-scalar probability density function (PDF) is used to evaluate the mean chemical rate in turbulent combustion. This presumed PDF is based on an original closure model which has previously been validated for adiabatic partially premixed combustion. This model is now extended to nonadiabatic premixed combustion in a turbulent reactive flow and only ...
Ribert, Guillaume, Champion, Michel, Gicquel, Olivier, Darabiha, Nasser, Veynante, Denis   +4 more
openaire   +2 more sources

Modeling Engine Turbulent Auto-Ignition Using Tabulated Detailed Chemistry

SAE Technical Paper Series, 2007
<div class="htmlview paragraph">In Homogeneous Charge Compression Ignition (HCCI) as well as in conventional Diesel engine, fuel oxidation chemistry determines the ignition timing and the subsequent heat release. Auto-ignition is characterized by the production of large active intermediate radicals during the initial stage of oxidation.
G. Subramanian, A. Pires Da Cruz, O. Colin, L. Vervisch   +3 more
openaire   +1 more source

A Filtered Tabulated Chemistry model for LES of stratified flames

Combustion and Flame, 2012
Abstract The model called Filtered Tabulated Chemistry for LES (F-TACLES), recently developed for turbulent premixed combustion [1] , is extended in the present article to stratified flames where the equivalence ratio is not spatially uniform. The principle is to generate a look-up table where thermo-chemical variables, computed from a set of ...
Pierre Auzillon, Olivier Gicquel, Nasser Darabiha, Denis Veynante, Benoit Fiorina   +4 more
openaire   +1 more source

Delayed Detached Eddy Simulations with Tabulated Chemistry for Thermal Loads Predictions

Journal of Propulsion and Power, 2021
The design phase of a rocket combustion chamber relies on the prediction of the wall heat fluxes, in order to optimize the components to prevent thermal damage.
Paola Breda, Michael Pfitzner
openaire   +1 more source

Premixed turbulent combustion modeling using tabulated detailed chemistry and PDF

Proceedings of the Combustion Institute, 2005
Tabulated chemistry and presumed probability density function (PDF) approaches are combined to perform RANS modeling of premixed turbulent combustion. The chemistry is tabulated from premixed flamelets with three independent parameters: the equivalence ratio of the mixture, the progress of reaction, and the specific enthalpy, to account for heat losses
Fiorina, Benoit, Vervisch, Luc, Carpentier, S., Darabiha, Nasser, Gicquel, Olivier   +4 more
openaire   +2 more sources

MODELING FLAME STABILIZATION BY HEAT LOSSES USING FILTERED TABULATED CHEMISTRY FOR LES

Proceeding of Eighth International Symposium on Turbulence and Shear Flow Phenomena, 2013
no ...
Mercier, Renaud, Auzillon, Pierre, Darabiha, Nasser, Gicquel, Olivier, Veynante, Denis, Fiorina, Benoit, Moureau, Vincent   +6 more
openaire   +2 more sources

Large Eddy Simulation of Swirling Kerosene/Air Spray Flame Using Tabulated Chemistry

Volume 1A: Combustion, Fuels and Emissions, 2013
Accurate characterization of swirled flames is a key point in the development of more efficient and safer aeronautical engines. The task is even more challenging for spray injection systems. On the one side, spray interacts with both turbulence and flame, eventually affecting the flame dynamics.
Franzelli, Benedetta, Vié, Aymeric, Fiorina, Benoit, Darabiha, Nasser   +3 more
openaire   +1 more source

Sectional soot model coupled to tabulated chemistry for Diesel RANS simulations

Combustion and Flame, 2015
In future Euro norms, the soot volume fraction and the soot number density will be regulated. Car manufacturersneed therefore accurate soot models for piston engine emissions prediction in order to developfuture engine concepts. This paper addresses this question by coupling a sectional soot model with a tabulatedcombustion model for RANS simulations ...
Aubagnac-Karkar, Damien, Michel, Jean-Baptiste, Colin, Olivier, Vervisch-Kljakic, Pauline, Darabiha, Nasser   +4 more
openaire   +2 more sources

Hydrogen–sulphur oxy-flame analysis and single-step flame tabulated chemistry

Fuel, 2004
Hydrogen–sulphur flame analysis is conducted from a numerical database of planar and unstrained laminar premixed flames. Simulations are performed using a fully detailed chemical scheme of H2S combustion. Both the equivalence ratio of the mixture and the amount of oxygen contained in the oxidizer are varied.
Vervisch, Luc, Labégorre, Bernard, Reveillon, Julien   +2 more
openaire   +2 more sources