Download or read book COMBUSTION PARTIELLEMENT PREMELANGEE STABILISATION ET EXTINCTION D UNE FLAMME DE DIFFUSION written by VALERIE.. FAVIER and published by . This book was released on 2000 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL EST CONSACRE A L'ETUDE DE LA STABILISATION ET L'EXTINCTION DES FLAMMES NON-PREMELANGEES. UNE ETUDE PRELIMINAIRE SUR LA STABILISATION D'UNE EXTREMITE DE FLAMME DANS LE SILLAGE DE LA PAROI SEPARATRICE DES REACTIFS INITIAUX EST PRESENTEE EN SIMULATION NUMERIQUE DIRECTE. PUIS, UN PROBLEME MODELE BIDIMENSIONNEL EST CONSTRUIT, A PARTIR DE L'INTERACTION ENTRE UNE FLAMME TRIPLE ET UNE PAIRE DE TOURBILLONS CONTRA-ROTATIFS. DANS CES SIMULATIONS DIRECTES, NOUS NOUS FOCALISONS SUR LES EFFETS DES VARIATIONS DU MICRO-MELANGE IMPOSEES A CETTE EXTREMITE DE FLAMME DE DIFFUSION. CECI NOUS PERMET DE MIEUX COMPRENDRE LES MECANISMES DE PROPAGATION DES EXTREMITES DE FLAMME ET AINSI, LE PROCESSUS DE STABILISATION A LA BASE DES FLAMMES DE DIFFUSION TURBULENTES DECROCHEES. CETTE CONFIGURATION EST AUSSI UTILISEE POUR ETUDIER L'INFLUENCE DU PREMELANGE PARTIEL DES REACTIFS LORS DU PHENOMENE D'EXTINCTION D'UNE FLAMME DE DIFFUSION, STABILISEE PAR UNE FLAMME TRIPLE. LA CREATION D'UN TROU DANS LA ZONE DE REACTION DONNANT NAISSANCE A DEUX NOUVELLES EXTREMITES DE FLAMME, NOUS POUVONS OBSERVER LE DEVELOPPEMENT DU PREMELANGE PARTIEL AU NIVEAU DE CES STRUCTURES DE FLAMME ET COMPARER LE COMPORTEMENT DE LA COMBUSTION, PENDANT ET APRES L'EXTINCTION, AVEC LA THEORIE DES FLAMMELETTES MONODIMENSIONNELLES. EN COMPLEMENT DE CES TRAVAUX, NOUS UTILISONS LE CODE OPPDIF POUR MIEUX COMPRENDRE L'IMPACT DU PREMELANGE PARTIEL DES REACTIFS SUR LA STRUCTURE INTERNE D'UNE FLAMME DE DIFFUSION MONODIMENSIONNELLE ET NOTAMMENT SUR LA REPONSE DE LA FLAMME LORS DE L'EXTINCTION.

Download or read book Stabilit des flammes partiellement pr melang es written by Lacour-C and published by Omn.Univ.Europ.. This book was released on 2018-02-28 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les travaux de recherche men s au cours de cette th se ont port sur la stabilit des flammes laminaires partiellement pr m lang es. Cette tude, r alis e en partenariat avec la Direction de la Recherche de Gaz de France et sous la direction de Mr.Honor (Ma tre de Conf rence INSA Rouen) et Mr. Boukhalfa (Professeur INSA Rouen) a permis de mettre en avant les ph nom nes physiques qui pilotent la stabilisation des flammes laminaires partiellement pr m lang es, l'appui d'un br leur domestique mod le fonctionnant avec un pr m lange riche. Le comportement a rodynamique de cette flamme partiellement pr m lang e a t d crit par V locim trie par Images de Particules (PIV) et par An mom trie Doppler Laser (LDV). Les zones de r action de la flamme ont t localis es et caract ris es par Fluorescence Induite par Laser (LIF) sur le radical OH. Le parall le entre les mod les tablis pour la stabilisation des flammes partiellement pr m lang es a t fait avec les flammes g n r es par les br leurs domestiques et il a t montr que les m canismes fondamentaux pilotant la stabilisation des flammes sur ce type d'appareil sont les m mes.

Download or read book Stabilit de flammes laminaires partiellement pr m lang es Application aux br leurs domestiques written by Corine Lacour and published by . This book was released on 2006 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les phénomènes physiques pilotant la stabilisation des flammes laminaires partiellement prémélangées sont étudiés à l'appui d'un brûleur domestique modèle. La structure et l'aérodynamique de la flamme sont caractérisées par Fluorescence Induite par Laser sur le radical OH et par Vélocimétrie par Images de Particules. Cette flamme est considérée comme deux flammes doubles adjacentes, chacune constituée d'une extrémité de flamme. La flamme double supérieure a un comportement similaire à une flamme d'un brûleur Bunsen : elle est stabilisée par un mécanisme d'accroche-flamme sur le brûleur et le sommet du cône est stabilisé par l'équilibre de la vitesse du front de flamme et de la vitesse de l'écoulement. La flamme double inférieure se stabilise au croisement de la ligne stoechiométrique et de la ligne iso-vitesse correspondant à la vitesse de flamme plane stoechiométrique. Cette base inférieure est soufflée lorsque ces deux lignes n'ont plus de point commun.

Download or read book Papers written by and published by . This book was released on 1964 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book AGARD Conference Proceedings written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1971 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Air Crash Investigations The End of the Concorde Era the Crash of Air France Flight 4590 written by George Cramoisi and published by Lulu.com. This book was released on 2010-12 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: On Tuesday 25 July 2000 Air France Flight AFR 4590, a Concorde registered F-BTSC, took off from Paris Charles de Gaulle, to undertake a charter flight to New York with nine crew members and one hundred passengers on board. During takeoff from runway 26 right at Roissy Charles de Gaulle Airport, a tyre was damaged. A major fire broke out. The aircraft was unable to gain height or speed and crashed onto a hotel, killing all 109 people on board and 4 on the ground. The crash would become the end of the Concorde era.

Download or read book Theoretical and Numerical Combustion written by Thierry Poinsot and published by R.T. Edwards, Inc.. This book was released on 2005 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing numerical techniques for combustion, this textbook describes both laminar and turbulent flames, addresses the problem of flame-wall interaction, and presents a series of theoretical tools used to study the coupling phenomena between combustion and acoustics. The second edition incorporates recent advances in unsteady simulation methods,

Download or read book In Vessel Melt Retention and Ex Vessel Corium Cooling IAEA Tecdoc No 1906 written by International Atomic Energy Agency and published by International Atomic Energy Agency. This book was released on 2020-08-06 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication results from a technical meeting on phenomenology and technologies relevant to in-vessel melt retention (IVMR) and ex-vessel corium cooling (EVCC). The purpose of the publication is to capture the state of knowledge, at the time of that meeting, related to phenomenology and technologies as well as the challenges and pending issues relevant to IVMR and EVCC for water cooled reactors by summarizing the information provided by the meeting participants in a form useful to practitioners in Member States.

Download or read book Uranie written by Camille Flammarion and published by . This book was released on 2019-06-14 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nicolas Camille Flammarion FRAS was a French astronomer and author. He was a prolific author of more than fifty titles, including popular science works about astronomy, several notable early science fiction novels, and works on psychical research and related topics.

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Download or read book Bulletin de la Soci t Des Sciences Naturelles Et Physiques Du Maroc written by Société des sciences naturelles et physiques du Maroc and published by . This book was released on 1950 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Suicide a Study in Sociology written by Émile Durkheim and published by Glencoe, Ill. : Free Press. This book was released on 1951 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Translated from French, this classic provides readers with an understanding of the impetus for suicide and its psychological impact on the victim, family, and society.

Download or read book Characterization Treatment and Use of Sewage Sludge written by P. L'Hermite and published by Springer. This book was released on 1981-05-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Second European Symposium held in Vienna, Austria, 21-23 October, 1980