Download or read book ETUDE NUMERIQUE DE L INTERACTION TOURBILLON PAROI PAR UNE METHODE PARTICULE MAILLAGE written by GHITA.. MANGOUB and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL CONSISTE A DEVELOPPER UN ALGORITHME QUI PERMET L'ETUDE D'ECOULEMENTS PLANS DE FLUIDES VISQUEUX INCOMPRESSIBLES EN PRESENCE DE CONCENTRATIONS TOURBILLONNAIRES. UNE PREMIERE ETUDE AVEC UNE METHODE PARTICULE MAILLAGE A PERMIS DE METTRE EN EVIDENCE DES PHENOMENES OBSERVES EXPERIMENTALEMENT. CEPENDANT, CETTE METHODE PRESENTE UNE CERTAINE LIMITATION, EN PARTICULIER LORSQUE LES ZONES OU LE TOURBILLON EST CONCENTRE SONT TRES PERTURBEES. CE PROBLEME PEUT SE POSER PAR EXEMPLE LORS DE L'INTERACTION D'UN TOURBILLON CONCENTRE AVEC UNE PAROI SOLIDE. UNE AMELIORATION DE CET ALGORITHME EST PROPOSEE. ELLE CONSISTE EN UNE DECOMPOSITION DES INCONNUES DU PROBLEME EN UNE PARTIE FLUCTUANTE REPRESENTEE PAR LES PARTICULES ET UNE PARTIE MOYENNE CALCULEE PAR DIFFERENCES FINIES. UNE METHODE DE CORRECTION LOCALE EST UTILISEE POUR LE CALCUL DE LA PARTIE FLUCTUANTE DE LA VITESSE. POUR LE TOURBILLON, ON PROPOSE UNE NOUVELLE METHODE DU TRAITEMENT DE LA DIFFUSION. L'ALGORITHME COMPLET EST D'UNE TRES GRANDE PRECISION. IL EST UTILISE POUR L'ETUDE DU PROBLEME D'ENROULEMENT DE NAPPE TOURBILLONNAIRE AINSI QUE CELUI DE L'INTERACTION D'UN TOURBILLON CONCENTRE AVEC UNE PAROI SOLIDE

Download or read book Etude num rique de l interaction entre un tourbillon d un profil d aile par la m thode des singularit s written by Priyono Eko Sanyoto and published by . This book was released on 1993 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etude num rique de l int raction entre un tourbillon et un profil d aile par la m thode des singularit s written by PRIYONO EKO.. SANYOTO and published by . This book was released on 1993 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'INTERACTION ENTRE UN PROFIL NACA 0012 ET UN TOURBILLON EST ETUDIEE NUMERIQUEMENT PAR LA METHODE DES SINGULARITES. LE CONTOUR ETANT DIVISE EN SEGMENTS DE DROITE, UNE REPARTITION DE SOURCES ET DE TOURBILLONS PERMET DE SIMULER L'ECOULEMENT PORTANT AUTOUR DU PROFIL. CETTE REPARTITION EST DETERMINEE PAR L'UTILISATION D'UNE CONDITION DE GLISSEMENT SUR LE PROFIL ET D'UNE CONDITION DE CHARGE NULLE AU BORD DE FUITE. LE SILLAGE EST ENFIN MODELISE PAR DES SEGMENTS TOURBILLONNAIRES QUI PERMETTENT DE PRENDRE EN COMPTE LA VARIATION DE LA CIRCULATION AUTOUR DU PROFIL. UN MODELE DE TOURBILLON AVEC NOYAU VISQUEUX AYANT ETE CHOISI, NOUS AVONS SIMULE SA DESINTEGRATION LORS DE LA COLLISION EN LE REPRESENTANT PAR 3, 7 ET 61 TOURBILLONS SUR LESQUELS NOUS AVONS REPARTI UNIFORMEMENT SON INTENSITE. LES RESULTATS NUMERIQUES OBTENUS, SONT COMPARES A DES RESULTATS EXPERIMENTAUX D'UNE PART ET A DES RESULTATS DONNES PAR LA RESOLUTION DES EQUATIONS DE NAVIER-STOKES D'AUTRE PART. IL APPARAIT CLAIREMENT QUE SI L'ON VEUT MODELISER UN TOURBILLON UNIQUE PAR PLUSIEURS TOURBILLONS, IL FAUDRAIT QUE LE NOMBRE DE CES DERNIERS SOIT SUPERIEUR A TROIS A CAUSE DE L'INFLUENCE PRIMORDIALE DE LEUR DISPOSITION RELATIVE ET DE LEUR ORIENTATION INITIALE DANS CE CAS. LA COMPARAISON ENTRE LES MODELES A SEPT TOURBILLONS ET A NUAGE DE 61 TOURBILLONS, MONTRE ENFIN QUE LE CHOIX PEUT SE FAIRE SELON UN CRITERE DE PRECISION/TEMPS DE CALCUL TANT QUE LA TAILLE DU TOURBILLON RESTE EN DECA D'UNE VALEUR POUR LAQUELLE L'INFLUENCE DE LA DISPOSITION RELATIVE DES SEPT TOURBILLONS N'EST PAS TRES IMPORTANTE

Download or read book Acoustics Aeroacoustics and Vibrations written by Fabien Anselmet and published by John Wiley & Sons. This book was released on 2016-01-07 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This didactic book presents the main elements of acoustics, aeroacoustics and vibrations. Illustrated with numerous concrete examples linked to solid and fluid continua, Acoustics, Aeroacoustics and Vibrations proposes a selection of applications encountered in the three fields, whether in room acoustics, transport, energy production systems or environmental problems. Theoretical approaches enable us to analyze the different processes in play. Typical results, mostly from numerical simulations, are used to illustrate the main phenomena (fluid acoustics, radiation, diffraction, vibroacoustics, etc.).

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 French English Medical Dictionary written by Alfred Gordon and published by . This book was released on 1921 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AGARD Advisory Report written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Theory of Propellers written by Theodore Theodorsen and published by . This book was released on 1944 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: A technical method is given for calculating the axial interference velocity of a propeller. The method involves the use of certain weight functions P, Q, and F. Numerical values for the weight functions are given for two-blade, three-blade, and six-blade propellers.

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 Routledge International Handbook of Ignorance Studies written by Matthias Gross and published by Routledge. This book was released on 2015-05-15 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once treated as the absence of knowledge, ignorance today has become a highly influential topic in its own right, commanding growing attention across the natural and social sciences where a wide range of scholars have begun to explore the social life and political issues involved in the distribution and strategic use of not knowing. The field is growing fast and this handbook reflects this interdisciplinary field of study by drawing contributions from economics, sociology, history, philosophy, cultural studies, anthropology, feminist studies, and related fields in order to serve as a seminal guide to the political, legal and social uses of ignorance in social and political life. Chapter 33 of this book is freely available as a downloadable Open Access PDF under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license available here: https://tandfbis.s3-us-west-2.amazonaws.com/rt-files/docs/Open+Access+Chapters/9780415718967_oachapter33.pdf

Download or read book Applications of the Theory of Plasticity in Soil Mechanics written by Jean Salençon and published by John Wiley & Sons. This book was released on 1977 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plant Ecology written by Unesco and published by . This book was released on 1955 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Continuum Mechanics written by Jean Salencon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outstanding approach to continuum mechanics. Its high mathematical level of teaching together with abstracts, summaries, boxes of essential formulae and numerous exercises with solutions, makes this handbook one of most complete books in the area. Students, lecturers, and practitioners will find this handbook a rich source for their studies or daily work.

Download or read book Applied Aerodynamics written by Jorge Colman Lerner and published by BoD – Books on Demand. This book was released on 2012-05-11 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamics, from a modern point of view, is a branch of physics that study physical laws and their applications, regarding the displacement of a body into a fluid, such concept could be applied to any body moving in a fluid at rest or any fluid moving around a body at rest. This Book covers a small part of the numerous cases of stationary and non stationary aerodynamics; wave generation and propagation; wind energy; flow control techniques and, also, sports aerodynamics. It's not an undergraduate text but is thought to be useful for those teachers and/or researchers which work in the several branches of applied aerodynamics and/or applied fluid dynamics, from experiments procedures to computational methods.

Download or read book The Last Billion Years written by Atlantic Geoscience Society and published by Nimbus Publishing (CN). This book was released on 2001 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the history of the rocks and fossils of the Maritime Provinces of Canada (New Brunswick, Nova Scotia and PEI) over the last billion years. The book is beautifully illustrated in full colour, with original paintings of ancient vistas, over 150 photographs, and crisp explanatory diagrams and sketches.

Download or read book Auxiliary power systems papers presented at the Propulsion and Energetics Panel 61st B specialists meeting held in Copenhagen Denmark 30 31 May 1983 written by AGARD. and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Yield Design written by Jean Salençon and published by Wiley-ISTE. This book was released on 2013-05-20 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the middle of the 20th Century yield design approaches have been identified with the lower and upper bound theorem of limit analysis theory – a theory associated with perfect plasticity. This theory is very restrictive regarding the applicability of yield design approaches, which have been used for centuries for the stability of civil engineering structures. This book presents a theory of yield design within the original “equilibrium/resistance” framework rather than referring to the theories of plasticity or limit analysis; expressing the compatibility between the equilibrium of the considered structure and the resistance of its constituent material through simple mathematical arguments of duality and convex analysis results in a general formulation, which encompasses the many aspects of its implementation to various stability analysis problems. After a historic outline and an introductory example, the general theory is developed for the three-dimensional continuum model in a versatile form based upon simple arguments from the mathematical theory of convexity. It is then straightforwardly transposed to the one-dimensional curvilinear continuum, for the yield design analysis of beams, and the two-dimensional continuum model of plates and thin slabs subjected to bending. Field and laboratory observations of the collapse of mechanical systems are presented along with the defining concept of the multi-parameter loading mode. The compatibility of equilibrium and resistance is first expressed in its primal form, on the basis of the equilibrium equations and the strength domain of the material defined by a convex strength criterion along with the dual approach in the field of potentially safe loads, as is the highlighting of the role implicitly played by the theory of yield design as the fundamental basis of the implementation of the ultimate limit state design (ULSD) philosophy with the explicit introduction of resistance parameters. Contents 1. Origins and Topicality of a Concept. 2. An Introductory Example of the Yield Design Approach. 3. The Continuum Mechanics Framework. 4. Primal Approach of the Theory of Yield Design. 5. Dual Approach of the Theory of Yield Design. 6. Kinematic Exterior Approach. 7. Ultimate Limit State Design from the Theory of Yield Design. 8. Optimality and Probability Approaches of Yield Design. 9. Yield Design of Structures. 10. Yield Design of Plates: the Model. 11. Yield Design of Plates Subjected to Pure Bending. About the Authors Jean Salençon is Emeritus Professor at École polytechnique and École des ponts et chaussées, ParisTech, France. Since 2009 he has been a member of the Administrative Board of CNRS (Paris, France). He has received many awards including the Légion d’Honneur (Commander), Ordre National du Mérite (Officer) and Palmes Académiques (Commander). His research interests include structure analysis, soil mechanics and continuum mechanics.