[PDF] Top 20 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] ... Voir le document complet

... those of sigma as soon as the flame starts interacting with the ...values of SGS viscosity in these regions, implying a rapid increase of the SGS wrinkling through the efficiency function ... Voir le document complet

... are two interests in enhancing heat transfer at the ...conditions and reach higher thrust F and specific impulse ...most of the thermal energy into kinetic energy for gaseous stream ... Voir le document complet

... Large-Eddy Simulation (LES) becomes a more and more demanded tool to improve the design of ...low-emission engines at the industrial development level and the ability for LES to provide ... Voir le document complet

... external flow will modify evaporation or conden- sation of a liquid pool with a plane surface in spite of its significant interest in various fields, such as processes in thermal ... Voir le document complet

... unsteady-state, two-phase medium, phase change at different temperatures of saturation of vapour of water and different acids (sulphuric, hydrochloric, nitric, ...step ... Voir le document complet

... generation of combustors, which feature lower than ever fuel consumption and pollutant ...to combustion instabilities, where the coupling between acoustics of the combustor and the ... Voir le document complet

... for combustion initiation is the spark ...equips aeronautical gas ...beginning of the aeronautical industry development. The phenomenology of spark plug and laser ignition is ... Voir le document complet

... A2 of mode 2 and calculated as a function of time ...response of a linear oscillator to the instantaneous turbulent ...deformation of the drop is lower for two reasons: ... Voir le document complet

... one of the most favourable to reach the target of the NOx mitiga- tion while limiting the formation of ...to combustion instabili- ties which hinder its ...process of combustion ... Voir le document complet

... occur in real gas turbine ...simulations of the experimental KIAI burner are carried out using two different LES codes, namely the compressible solver AVBP and the low Mach number code YALES2, ... Voir le document complet

... signature of this momentization can be seen on the instantaneous angular momentum I(t) for Re near the peak of susceptibility and θ = 0 ...with two separate time scales: fast fluctuations ... Voir le document complet

... effects of inertia, elasticity and fluid drag in models of filamentary objects, such as algae in marine environments, bio-filaments (actin and micro- tubules, for instance), ... Voir le document complet

... diameter and h K = 150 and hη = 1.75 (other values can be found in the literature ...effects in laminar regimes, this model is also used in the case of unit-cell localized or ... Voir le document complet

... discussed in Section Quasistatic models for low cap- illary, Bond, and Reynolds numbers, it is often convenient to use a simplified meso-scale description of the porous medium as a pore network ... Voir le document complet

... numerical simulation of two-phase incompressible flows with a velocity field imposed or computed from a Navier-Stokes ...the two fluid phases of a domain that is subject to an ... Voir le document complet

... Vortices and (right) on their radial component. Table V reports the two-phase flow configurations we ...influence of the Reynolds number (through H variation), the bubble size by ... Voir le document complet

... to turbulent regime ranging from 3000 to 8000. The statistics of the flow are discussed using two different averaging proce- dures that permit to characterize the mean azimuthal velocity, the ... Voir le document complet

... the two impellers: the problem conditions are invariant under  rotation around any radial axis passing through the center of the cylinder ...symmetric, and the symmetry switches to the SOð2Þ group ... Voir le document complet

... incompressible in the sense that the variation of its density with respect to the fluid pressure is ...small. In the incompressible model, the acoustic waves are no longer ...point of view ... Voir le document complet