Combustion Diphasique Atomisation Et Sprays-Books Pdf

Combustion diphasique Atomisation et sprays
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Les sprays et leurs applications, Agriculture, Les sprays et leurs applications. Traitement de surface, Combustion Refroidissement, Les sprays et la combustion. Automobile, A ronautique, Les sprays et la combustion. Des coulements complexes, Visualisation des structures internes d un jet diesel. A Fath K M nch and A Leipertz Spray Break up Process of. Diesel Fuel Investigated Close to the Nozzle ICLASS 97. S oul Cor e p 513 520 1997, Jet d oxyg ne et jet d hydrog ne 1MPa.
Gicquel P Vingert L Lecourt R Barat M 2001 Etude, exp rimentale des sprays cryotechniques dans des conditions sub. et supercritiques GDR combustion dans les moteurs de fus e. Les sprays et la combustion, Stockage combustible liquide. le passage des gouttes diminue le temps, d vaporation et concentre la zone r active. Pb d chelle 10ms 5cm 10mg, Pr paration du m lange, Atmosph re. ou R servoir, R gulateur de, pression Pompe, Mise en forme.
Pulv risation pr, Vaporisation R gulateur, Introduction. Admission Mise, temp rature, Combustion, Recirculation. Echappement, D pollution, Les sprays et la combustion. Structure du spray exemple de l atomisation haute pression. Front de vapeur, coulement de gaz, fuel liquide, C ur liquide. Fragments de liquide, Flamme turbulente, Les sprays et la combustion.
Structure du spray exemple de l atomisation assist par air. Flamme turbulente, Front de vapeur, O2 liquide, coulement de gaz. C ur liquide, Fragments de liquide, M canismes de pulv risation atomisation. Rompre le continuum liquide, Viscosit et tension superficielle. Temp rature, M canismes de pulv risation atomisation. Cavitation, Lo c M s LMFA, M canismes de pulv risation atomisation.
Cavitation formation de poche de vapeur dans le liquide. Influence de la cavitation dans l injecteur sur, l atomisation primaire. Nombre de cavitation, Pinj pression d injection, Psat pression de vapeur saturante. P diff rence de pression amont, Injecteur cavitant Injecteur non cavitant. R Marcer P Le Cottier H Chaves B Argueyreolles C Habchi et B Barbeau A validated. Numerical Simulation of Diesel Injector Flow Using a VOF Method SAE Technical Paper series. N 2000 01 2932 2000, M canismes de pulv risation atomisation. Instabilit s, Rayleigh capillaire p, instable a 1 R2 1 R1 stable b 1 R1 1 R2 en A R1 R2.
Le liquide est vacu de la zone de d formation diminuant la. section de la zone de d formation et entra nant ainsi une. r duction suppl mentaire du rayon de courbure Les effets. se conjuguent et s amplifient mutuellement jusqu entra ner. la rupture, Rayleigh Taylor, instabilit de l interface s parant deux fluides de. densit s diff rentes qui r sulte de la pouss e du, fluide le plus lourd sur le fluide le plus l ger. Kelvin Helmoltz, mouvement ondulatoire qui se forme lorsque deux. fluides thermiquement stables sont superpos s et, se d placent des vitesses diff rentes leur. surface de contact, M canismes de pulv risation atomisation.
Ligamentation formation de ligament aboutissant la fragmentation du liquide. Atomisation assist e par air d stabilisation d un jet liquide par un. courant gazeux Dg 8mm ug 35m s ul 0 6m s, E Villermaux Unifying ideas on mixing and atomization New J Phys 6 2004 125. Re u chelle de vitesse, Comp tition entre frottements. L chelle de longueur, u 2r r chelle de rayon, a rodynamiques et tension de We. surface tension de surface, masse volumique, Oh Re 1 We 0 5. M canismes de pulv risation atomisation, Ligaments Fragmentation.
Cisaillement liquide gaz, instabilit Kelvin Helmoltz. ondes axysim triques amplifi es, instabilit Rayleigh Taylor transverse. instabilit capillaire, E Villermaux Unifying ideas on. rupture coalescence mixing and atomization New J, Phys 6 2004 125. Fluid Mech 221 183 204 21 Atomiseurs Method Droplet Size mm Application Pressure Atomization Plain Orifice 25 250 Diesel engines Jet engine afterburners Ramjets Simplex 20 200 Gas turbines Industrial furnaces Duplex 20 200 Gas turbine combustors Dual Orifice 20 200 A variety of aircraft and industrial gas turbines Spill Return 20 200 A variety of combustors Good potential

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