Download or read book Etude num rique et exp rimentale de l vaporation simultan e de plusieurs gouttes de carburant written by Mohamed Bouaziz and published by . This book was released on 1998 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF DE CE TRAVAIL EST DE POURSUIVRE LA MISE AU POINT D'UN MODELE NUMERIQUE INITIE AU L.M.A.I. POUR SIMULER LE PHENOMENE D'EVAPORATION D'UNE OU PLUSIEURS GOUTTES EN INTERACTION FORMEES DE LIQUIDES PURS OU DE MELANGES. LA THEORIE DU FILM EST UTILISEE POUR LA MODELISATION DES TRANSFERTS AU SEIN DE LA PHASE GAZEUSE ET LES EQUATIONS DE TRANSFERTS DE CHALEUR ET DE MASSE POUR LA MODELISATION DES CHAMPS THERMIQUES ET MASSIQUES DANS LA GOUTTE. LA DETERMINATION NECESSAIRE DES EXPRESSIONS DONNANT LES NOMBRES DE NUSSELT ET DE SHERWOOD QUI TRADUISENT CES TRANSFERTS, SE FAIT GRACE A LA RESOLUTION DES EQUATIONS DE LA COUCHE LIMITE. LE PHENOMENE D'INTERACTION ENTRE GOUTTES EN EVAPORATION PEUT SE TRADUIRE PAR L'AJUSTEMENT DE LA VALEUR DES NOMBRES DE NUSSELT ET DE SHERWOOD MOYENS. LE DISPOSITIF EXPERIMENTAL ELABORE EN PARALLELE, SE COMPOSE ESSENTIELLEMENT D'UNE SOUFFLERIE THERMIQUE CAPABLE DE CREER LES CONDITIONS EXPERIMENTALES (TEMPERATURE ET VITESSE) REQUISES, ET D'UN APPAREILLAGE DE MESURES (CAMERA VIDEO : MESURE DE LA REGRESSION DU RAYON ET CAMERA INFRAROUGE : MESURE DE LA TEMPERATURE DE SURFACE). LA OU LES GOUTTES DE LIQUIDES PURS OU EN MELANGES (HEPTANE, DECANE, HEXANE, OCTANE) SONT SUSPENDUES A DES CAPILLAIRES EN VERRE. LE MODELE NUMERIQUE EST VALIDE PAR RAPPORT AUX RESULTATS DE LA LITTERATURE PUIS PAR RAPPORT AUX PRESENTS RESULTATS EXPERIMENTAUX. LA COMPARAISON EST SATISFAISANTE ET MONTRE LA CAPACITE DU MODELE A PREDIRE L'EVAPORATION D'UNE GOUTTE DE LIQUIDE PUR OU DE MELANGE DE CARBURANTS A BASSES ET A HAUTES PRESSIONS, ISOLEES OU EN INTERACTION. L'ORIGINALITE DU TRAVAIL RESIDE DANS L'ELABORATION D'UNE METHODE SEMI-EXPERIMENTALE POUR LA QUALIFICATION ET LE DEPOUILLEMENT DES MESURES EN CONVECTION FORCEE ET POUR LA DETERMINATION DES VALEURS DE L'EMISSIVITE DES PRODUITS UTILISES.
Download or read book Contribution l tude de l vaporation et de la combustion de gouttes de carburants liquides written by Joseph Dgheim and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail concerne une étude théorique et expérimentale de l'évaporation et de la combustion de gouttes de carburants liquides. Il comporte deux parties. La première est consacrée à une étude numérique de la combustion en convection naturelle d'une goutte de liquide pur. Dans un premier temps, nous avons modélisé les transferts qui se développent dans la phase vapeur entourant une goutte assimilée à une sphère saturée d'un liquide pur. Dans un deuxième temps, nous avons analysé les transferts qui se déroulent dans les phases liquide et vapeur en couplant les équations qui régissent les transferts dans les deux phases. La deuxième partie concerne l'analyse expérimentale de l'évaporation et de la combustion de gouttes de carburants liquides à l'aide d'une caméra CCD et d'une caméra de thermographie infrarouge.
Download or read book Fuel Vapor Concentration Measurements on Droplets by Infrared Extinction written by Bernhard Wagner and published by . This book was released on 2009 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse présente l'étude de la mesure de la concentration de vapeur de carburant autour de gouttes en évaporation dans un jet de gouttelettes mono-dispersés et dans un brouillard au moyen de la technique par Absorption InfraRouge (AIR). L'étude bibliographique montre les limitations de la méthode utilisant la Fluorescence Induite par Laser (FIL) pour mesurer les concentrations de vapeur de carburant dans ces configurations. En raison de ces difficultés aucune quantification complète de l'évaporation dans un jet de gouttelettes en interaction ne peut être obtenue en utilisant cette technique. L'objectif de cette thèse est d'évaluer les possibilités quantitatives de la méthode AIR comme technique complémentaire ou alternative à la méthode FIL. Les moyens expérimentaux et les post-traitements des données développées pour cette recherche sont présentés. Une simulation numérique simplifiée du processus d'absorption dans un jet de gouttelettes est développée pour permettre des comparaisons avec les résultats expérimentaux. Les capacités de la méthode AIR à quantifier le champ de vapeur dans un jet de gouttelettes mono-dispersés d'acétone et dans un brouillard de n-octane sont évaluées par comparaisons aux résultats d'expérience et de simulations numériques publiés. Les perspectives de développement de la méthode AIR pour quantifier la concentration de vapeur autour de gouttelettes sont discutées.
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Download or read book Basic Technics in Ecological Farming Techniques de Base en Agriculture Biologique Grunds tzliche Verfahren der kologischen Landwirtschaft Le Maintien de la Fertilit des Sols The Maintenance of Soil Fertility Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Droplets and Sprays written by Saptarshi Basu and published by Springer. This book was released on 2017-12-11 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on droplets and sprays relevant to combustion and propulsion applications. The book includes fundamental studies on the heating, evaporation and combustion of individual droplets and basic mechanisms of spray formation. The contents also extend to the latest analytical, numerical and experimental techniques for investigating the behavior of sprays in devices like combustion engines and gas turbines. In addition, the book explores several emerging areas like interactions between sprays and flames and the dynamic characteristics of spray combustion systems on the fundamental side, as well as the development of novel fuel injectors for specific devices on the application side. Given its breadth of coverage, the book will benefit researchers and professionals alike.
Download or read book Droplets and Sprays written by Sergei Sazhin and published by Springer. This book was released on 2014-05-19 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a clear and systematic description of droplets and spray dynamic models, this book maximises reader insight into the underlying physics of the processes involved, outlines the development of new physical and mathematical models and broadens understanding of interactions between the complex physical processes which take place in sprays. Complementing approaches based on the direct application of computational fluid dynamics (CFD), Droplets and Sprays treats both theoretical and practical aspects of internal combustion engine process such as the direct injection of liquid fuel, subcritical heating and evaporation. Including case studies that illustrate the approaches relevance to automotive applications, it is also anticipated that the described models can find use in other areas such as in medicine and environmental science.
Download or read book Gas pressure Bonding written by S. J. Paprocki and published by . This book was released on 1961 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Heat and Mass Transfer written by T. L. Bergman and published by John Wiley & Sons. This book was released on 2011-04-12 with total page 2249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Heat and Mass Transfer, 7th Edition is the gold standard of heat transfer pedagogy for more than 30 years, with a commitment to continuous improvement by four authors having more than 150 years of combined experience in heat transfer education, research and practice. Using a rigorous and systematic problem-solving methodology pioneered by this text, it is abundantly filled with examples and problems that reveal the richness and beauty of the discipline. This edition maintains its foundation in the four central learning objectives for students and also makes heat and mass transfer more approachable with an additional emphasis on the fundamental concepts, as well as highlighting the relevance of those ideas with exciting applications to the most critical issues of today and the coming decades: energy and the environment. An updated version of Interactive Heat Transfer (IHT) software makes it even easier to efficiently and accurately solve problems.
Download or read book FUNDAMENTALS OF HEAT AND MASS TRANSFER written by B. K. VENKANNA and published by PHI Learning Pvt. Ltd.. This book was released on 2010-01-01 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This comprehensive text on the basics of heat and mass transfer provides a well-balanced treatment of theory and mathematical and empirical methods used for solving a variety of engineering problems. The book helps students develop an intuitive and practical under-standing of the processes by emphasizing the underlying physical phenomena involved. Focusing on the requirement to clearly explain the essential fundamentals and impart the art of problem-solving, the text is written to meet the needs of undergraduate students in mechanical engineering, production engineering, industrial engineering, auto-mobile engineering, aeronautical engineering, chemical engineering, and biotechnology.
Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.
Download or read book Advances in Hydroinformatics written by Philippe Gourbesville and published by Springer. This book was released on 2015-08-21 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of extended papers based on presentations given during the SIMHYDRO 2014 conference, held in Sophia Antipolis in June 2014. It focuses on the modeling and simulation of fast hydraulic transients, on 3D modeling, and on uncertainties and multiphase flows. The book explores both the limitations and performance of current models and presents the latest developments based on new numerical schemes, high-performance computing, multiphysics and multiscale methods, and better interaction with field or scale model data. It addresses the interests of practitioners, stakeholders, researchers and engineers active in this field.
Download or read book Theory and Design for Mechanical Measurements written by Richard S. Figliola and published by John Wiley & Sons. This book was released on 2020-06-23 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory and Design for Mechanical Measurements merges time-tested pedagogy with current technology to deliver an immersive, accessible resource for both students and practicing engineers. Emphasizing statistics and uncertainty analysis with topical integration throughout, this book establishes a strong foundation in measurement theory while leveraging the e-book format to increase student engagement with interactive problems, electronic data sets, and more. This new Seventh edition has been updated with new practice problems, electronically accessible solutions, and dedicated Instructor Problems that ease course planning and assessment. Extensive coverage of device selection, test procedures, measurement system performance, and result reporting and analysis sets the field for generalized understanding, while practical discussion of data acquisition hardware, infrared imaging, and other current technologies demonstrate real-world methods and techniques. Designed to align with a variety of undergraduate course structures, this unique text offers a highly flexible pedagogical framework while remaining rigorous enough for use in graduate studies, independent study, or professional reference.
Download or read book Fundamentals of Heat and Mass Transfer written by Theodore L. Bergman and published by John Wiley & Sons. This book was released on 2020-07-08 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: With Wiley’s Enhanced E-Text, you get all the benefits of a downloadable, reflowable eBook with added resources to make your study time more effective. Fundamentals of Heat and Mass Transfer 8th Edition has been the gold standard of heat transfer pedagogy for many decades, with a commitment to continuous improvement by four authors’ with more than 150 years of combined experience in heat transfer education, research and practice. Applying the rigorous and systematic problem-solving methodology that this text pioneered an abundance of examples and problems reveal the richness and beauty of the discipline. This edition makes heat and mass transfer more approachable by giving additional emphasis to fundamental concepts, while highlighting the relevance of two of today’s most critical issues: energy and the environment.
Download or read book Dictionary of Technical Terms for Aerospace Use written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1965 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brief definitions "intended to be as clear as possible to the non-expert, but accuracy has not been compromised for the sake of readability. Mathematics has been used where necessary to avoid ambiguity."--Intro. Published 1965.
Download or read book Agricultural English written by Georgeta Raţă and published by Cambridge Scholars Publishing. This book was released on 2012-04-25 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural English is a collection of essays on the English of Agriculture. The approach is a linguistic one: the different aspects of the English used in the field of agriculture (agricultural practices, agricultural systems) and in some fields related to agriculture (agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, zoology) are analysed from a morphological (combination, derivation), syntactical (nominal phrases, verbal phrases), lexical and lexicographical, semantic (homonymy, semantic fields, synonymy, terminology), pragmatic (academic discourse, idiom, metaphor), etymological (etymon, Latin heritage), and contrastive (English–Croatian, English–French, English–German, English–Romanian, Romanian–English) points of view. The book will appeal to agriculturists, animal breeders, professors, researchers, students, and translators from Croatian-, English-, French-, German-, and Romanian-speaking countries, active in their own countries or abroad. The types of academic readership it would appeal to include academic teaching staff, researchers and students in the fields of agriculture and related fields – agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, and zoology.
Download or read book Thermal Environmental Engineering written by Thomas H. Kuehn and published by Pearson. This book was released on 1998 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest edition of the classic book grounded in the fundamentals. It introduces heating, ventilation, and air conditioning starting with basic principles of engineering leading to the latest HVAC design practice. Its engineering approach emphasizes fundamentals and realistic applications. Acknowledging numerous approaches to all engineering problems, the book presents alternate approaches and describes why some approaches work best in specific applications and what compromises are made using each of them. Provides carefully worked examples with step-by-step solutions listing assumptions, reference equations, and supporting material. Incorporates a careful use of easy-to-follow units and conversion factors providing basic mass and energy balances. The third edition of Thermal Environmental Engineering has been updated to reflect current approaches as well as new chapters on energy estimation, air handling system design, and piping system design. Discusses new replacement refrigerants as well as environmental issues. Presents single and multiple zone psychronetric systems; moisture transport in building structures; and the latest topics on indoor air quality and human comfort. An essential reference book for professional mechanical engineers.
