Turbulent non-perfectly premixed combustion
LES of explosions in venting chamber: A test case for premixed turbulent combustion models
... the combustion chamber for configuration BBBS ...the combustion cham- ber ( x < 160 mm), the mesh resolution 1x (calculated from the nodal volume) is about ...the combustion chamber reaches ...a ...
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A new experimental database for the investigation of soot in a model scale swirled combustor under perfectly premixed conditions
... laminar non-premixed and premixed sooting flames ...and turbulent flame configurations, enabling the study of the effect of well-controlled flow variations on soot ...the turbulent ...
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LES of explosions in venting chamber: A test case for premixed turbulent combustion models
... the turbulent com- bustion ...reproduces perfectly the different phases of propagation and the successive flame accelerations (especially around the second baf- fle plate) and decelerations (mainly between ...
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Flame front surface characteristics in turbulent premixed propane/air combustion
... Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Flame front surface characteristics in turbulent premixed propane/air combustion Gulder, O. ...
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An experimental study on turbulent premixed expanding flames using simultaneously Schlieren and tomography techniques
... flame properties, i.e. u’/S L 0 . Future work will focus on improving this correlation especially for lower turbulent intensities as well as several pressures and dilution. In the second part of the paper, the ...
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Scale analysis of the flame front in premixed combustion using Proper Orthogonal Decomposition
... 2. Experimental apparatus The turbulent methane/air premixed flame is generated via an axisymetric Bunsen burner with D = 25 mm in diameter. For all cases reported in this study, the bulk velocity U d of ...
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Do turbulent premixed flame fronts in spark-ignition engines behave like passive surfaces?
... L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB. Combustion in Diesel and SI Engines, ...
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Unsteady Numerical Simulations of Transcritical Turbulent Combustion in Liquid Rocket Engines
... l’équipe combustion du CERFACS, qui m’ont apporté des éclairages: Guilhem Lacaze, Olivier Cabrit, Matthieu Leyko, Matthieu Boileau, Félix Jaegle, Marta Garcia, Nicolas Lamarque, Simon Mendez et Florent ...
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An improved CARS spectgrometer for single-shot measurements in turbulent combustion
... 1 has mark- edly poorer resolution than the strong arm (attempts to improve the resolution by systematically varying the posi- tion of the fiber tip failed). Secon[r] ...
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Burning rates and surface characteristics of hydrogen-enriched turbulent lean premixed methane-air flames
... hydrogen-enriched turbulent lean premixed methaneeair flames were experimentally studied by laser tomography visualization method using a V-shaped flame ...configuration. Turbulent burning velocity ...
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Combustion state monitoring of premixed heating appliances with flame ionization current and chemiluminescence
... An alternative technique concerns the flame chemiluminescence, which is easy to record and sensitive to the equivalence ratio. The diagnostic technique is mainly based on the emission intensities of OH* at 308 nm, CH* at ...
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Large Eddy Simulation of combustion instabilities in a lean partially premixed swirled flame
... self-excited combustion instabilities in gas-fueled swirled burners: the effects of incomplete mixing between fuel and air at the combustion chamber ...the combustion chamber is rarely achieved in ...
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Combustion state monitoring of premixed heating appliances with flame ionization current and chemiluminescence
... The flame ionization current can be measured when a bias voltage is applied between an ionization probe and the metallic burner surface. Its intensity is known to be related to the flame equivalence ratio and flame ...
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Dynamics and control of premixed combustion systems based on flame transfer and describing functions
... While the effect of velocity perturbations is essentially understood, that of composition non-uniformities is less well documented. Early discussions of the “equivalence ratio mechanism” may be found in Baade ...
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Burning rates and surface characteristics of hydrogen-enriched turbulent lean premixed methane-air flames
... a turbulent flame. This result is inconsistent with most previous turbulent premixed flame experimental data, which showed that turbulent burning velocities can be expressed by a correlation ...
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Effect of hydrogen addition on turbulent burning characteristics of lean premixed V-shaped CH4-air flames
... the turbulent flame speed is the stretch factor I 0 in ...the turbulent flame speed is mainly due to the change in laminar burning ...the turbulent burning velocity is also ...
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Modeling of pressure loads during a premixed hydrogen combustion in the presence of water spray
... a DEN-DM2S-STMF, CEA, Universit´ e Paris-Saclay, France b Normandie University, INSA of Rouen, CNRS, CORIA, 76000 Rouen, France Abstract This paper describes the development of a simplified model for pressure evolution ...
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Modeling and simulation of two-phase flow turbulent combustion in aeronautical engines
... Centre Européen de Recherche et Formation Avancées en Calcul Scientifique (CERFACS). Directeur(s) de Thèse :[r] ...
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SIMULATION DE LA COMBUSTION TURBULENTE NON-PREMELANGEE PAR LE MODELE « L.E.S »
... of turbulent reacting ...gas-phase turbulent combustion non-premixed in ...of turbulent reacting flows is ...and non-reactive regimes are successfully compared with ...
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A general family of Perfectly Matched Layers for non necessarily convex domains
... The comparison with cartesian PML gives excellent results, even if the choice of the numerical approximation was very poor with a Finite Volums method. The use of methods like Discontinuous Galerkin has to be considered. ...
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