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Author : Joe͏̈l RAFFORT
Publisher :
ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (494 download)
Download or read book Etude de l'écoulement d'un fluide à travers des soupapes à usage industriel written by Joe͏̈l RAFFORT and published by . This book was released on 1980 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohamed Hilal
Publisher :
ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (49 download)
Download or read book ETUDE DE L'ECOULEMENT D'UN FLUIDE NON NEWTONIEN A TRAVERS LES REACTEURS A LIT FIXE written by Mohamed Hilal and published by . This book was released on 1991 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL EST CONSACRE A L'ETUDE DES CHUTES DE PRESSION, DE LA DISPERSION AXIALE ET DU TRANSFERT DE MATIERE LIQUIDE-SOLIDE, LORS DE L'ECOULEMENT D'UN FLUIDE NON NEWTONIEN PUREMENT VISQUEUX SUIVANT UNE LOI PUISSANCE OU LA LOI D'ELLIS A TRAVERS DES LITS FIXES DE SPHERES ET DE PARTICULES PARALLELEPIPEDIQUES. NOUS AVONS DEVELOPPE ET TESTE EXPERIMENTALEMENT UN MODELE PERMETTANT L'EVALUATION DES CHUTES DE PRESSION A PARTIR D'UNE REPRESENTATION DU MILIEU POREUX DE TYPE CAPILLAIRE INCLUANT DES PARAMETRES STRUCTURAUX. LA DISPERSION AXIALE DANS L'ECOULEMENT A ETE CARACTERISEE A L'AIDE DE LA DETERMINATION EXPERIMENTALE DE LA DISTRIBUTION DES TEMPS DE SEJOUR. LE TRANSFERT DE MATIERE LIQUIDE-SOLIDE A ETE ETUDIE AU MOYEN D'UNE METHODE ELECTROCHIMIQUE. NOUS PROPOSONS L'UTILISATION DE CRITERES ADIMENSIONNELS BASES SUR LE DIAMETRE MOYEN DE PORE, LES GRANDEURS MOYENNES DE PORE ET LA LOI RHEOLOGIQUE D'ELLIS POUR DECRIRE A L'AIDE D'EQUATIONS DE CORRELATION LES PHENOMENES ETUDIES, SUR UNE LARGE GAMME DE GRADIENTS DE VITESSE: 1) POUR UN LIT DE STRUCTURE DONNEE UNE SEULE EQUATION ADIMENSIONNELLE PERMET DE REPRESENTER LA DISPERSION AXIALE OU LE TRANSFERT DE MATIERE AUSSI BIEN POUR LES FLUIDES NEWTONIENS QUE POUR LE FLUIDE NON NEWTONIEN PUREMENT VISQUEUX ETUDIE; 2) DANS LA ZONE DE NOMBRE DE REYNOLDS CORRESPONDANT A NOS EXPERIENCES UNE SEULE EQUATION DE CORRELATION BASEE SUR CES CRITERES REPRESENTE LE TRANSFERT DE MATIERE POUR LES LITS DE STRUCTURES DIFFERENTES ETUDIES
Author : Olivier Barbara
Publisher :
ISBN 13 :
Total Pages : 527 pages
Book Rating : 4.:/5 (8 download)
Download or read book Étude de l'écoulement dans un coude written by Olivier Barbara and published by . This book was released on 1998 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail réalisé est une contribution à l'analyse des écoulements réels dans des conduites de transport de gaz. La géométrie prise en compte est un coude à 90°, de section circulaire et de rapport rayon de courbure / diamètre de conduite égal à 1,5. Les trois approches complémentaires (expérimentale, numérique et théorique) ont permis d'étuider l'influence des conditions d'écoulement en entrée du coude sur l'écoulement résultant. Quatre types de conditions d'écoulement sont ainsi considérés (écoulement établi, écoulement en rotation centrée, écoulement axial dissymétrique et couplage rotation-dissymétrie). Le nombre de Reynolds basé sur la vitesse débitante et sur le diamètre de conduite est fixé à 100.000. Les essais réalisés sur un banc hydraulique comprennent des mesures de vitesse par anémométrie Doppler Laser et des visualisations d'écoulement. Pour le calcul, le code industriel Fluent est utilisé. Pour un écoulement amont établi, les évolutions respectives des champs de pression, de vitesse axiale, de l'écoulement secondaire et de turbulence sont analysées en détail et caractérisées à l'aide de différents paramètres. Lorsque l'écoulement amont présente une rotation centrée, une intensité critique de giration est observée pour laquelle l'écoulement secondaire à l'aval du coude passe d'un régime à deux vortex contrarotatifs à un régime ne présentant plus qu'un seul tourbillon décentré. Pour un écoulement amont dissymétrique, l'influence de la position angulaire du maximum de vitesse par rapport au plan de symétrie du coude a été étudiée. Lorsque le maximum de vitesse axiale est placé dans le plan de symétrie du coude, la dissymétrie initiale se conjugue à la dissymétrie occasionnée par le coude. Par contre, si ce maximum est placé en dehors de ce plan, une rotation d'ensemble de l'écoulement est observée en aval du coude. Lorsque l'écoulement amont est à la fois dissymétrique et giratoire, les influences respectives de ces deux perturbations s'ajoutent ou se retranchent provoquant ainsi, en sortie, une augmentation ou une diminution de la rotation initiale pouvant aller jusqu'à son changement de signe. L'utilisation de la théorie de Kitoh permet de regrouper et d'expliquer les résultats complexes observés.
Author : Georges Ringenbach
Publisher :
ISBN 13 :
Total Pages : 215 pages
Book Rating : 4.:/5 (489 download)
Download or read book Etude de l'écoulement plan d'un fluide d'Oldroyd-B dans une conduite présentant une distribution périodique de brusques variations de section written by Georges Ringenbach and published by . This book was released on 1996 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL, A LA FOIS THEORIQUE ET EXPERIMENTAL, PORTE SUR LE THEME DES ECOULEMENTS MIXTES DE FLUIDES VISCOELASTIQUES DANS LES CONDUITES A TRAVERS DES CHANGEMENTS DE SECTION BRUSQUES. L'ETUDE THEORIQUE CONSISTE EN UNE MODELISATION NUMERIQUE DE L'ECOULEMENT PLAN D'UN FLUIDE D'OLDROYD-B DANS TROIS GEOMETRIES DIFFERENTES: UN RETRECISSEMENT, UN ELARGISSEMENT, UNE SUCCESSION PERIODIQUE DE RETRECISSEMENTS ET D'ELARGISSEMENTS. LE PROBLEME ADIMENSIONNEL DEPEND DE TROIS PARAMETRES HYDRODYNAMIQUES: UN NOMBRE DE REYNOLDS, UN NOMBRE DE WEISSENBERG ET LE RAPPORT DES TEMPS CARACTERISTIQUES DU FLUIDE. LES EQUATIONS DE L'ECOULEMENT SONT RESOLUES A L'AIDE D'UNE METHODE NUMERIQUE AUX DIFFERENCES FINIES DANS UN CERTAIN DOMAINE DE VALEURS DU NOMBRE DE WEISSENBERG. L'EXAMEN DES RESEAUX DE LIGNES DE COURANT MONTRE QUE L'INERTIE ET L'ELASTICITE EXERCENT DES EFFETS ANTAGONISTES SUR LES TOURBILLONS DE RECIRCULATION. LES RESULTATS OBTENUS SONT EN BON ACCORD AVEC D'AUTRES ETUDES SIMILAIRES. LE FLUIDE UTILISE DANS LA VEINE D'ESSAI, CONSTITUEE DE RETRECISSEMENTS PERIODIQUES, EST UNE SOLUTION DILUEE D'UN POLYMERE A HAUTE MASSE MOLECULAIRE DONT LE COMPORTEMENT RHEOLOGIQUE EST BIEN TRADUIT PAR UNE LOI D'OLDROYD-B. L'ECOULEMENT EST EXPLORE A L'AIDE D'UNE METHODE DE VISUALISATION PAR TRACEURS SOLIDES ASSOCIEE A UN LOGICIEL INFORMATIQUE D'ANALYSE DES CLICHES. L'ACCORD ENTRE LE MODELE ET L'EXPERIENCE EST SATISFAISANT DANS LE DOMAINE DES FAIBLES NOMBRES DE REYNOLDS
Author : Marcel Ribaut
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (258 download)
Download or read book Le calcul de l'écoulement d'un fluide au travers d'une turbomachine au moyen de la théorie des potentiels written by Marcel Ribaut and published by . This book was released on 1969 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Linda Strande
Publisher : IWA Publishing
ISBN 13 : 1780404735
Total Pages : 428 pages
Book Rating : 4.7/5 (84 download)
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Author : Don Montague
Publisher : Taylor & Francis
ISBN 13 : 9780419199106
Total Pages : 472 pages
Book Rating : 4.1/5 (991 download)
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.
Author : France. Commissariat à l'énergie atomique
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.3/5 ( download)
Download or read book Gas-cooled Nuclear Reactors written by France. Commissariat à l'énergie atomique and published by . This book was released on 2006 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 656 pages
Book Rating : 4.:/5 (327 download)
Download or read book Bulletin de L'Institut International Du Froid written by and published by . This book was released on 2008 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Trong T. Bui
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (317 download)
Download or read book A Parallel Finite Volume Algorithm for Large-eddy Simulation of Turbulent Flows written by Trong T. Bui and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roger Balian
Publisher : Springer Science & Business Media
ISBN 13 : 3540454802
Total Pages : 626 pages
Book Rating : 4.5/5 (44 download)
Download or read book From Microphysics to Macrophysics written by Roger Balian and published by Springer Science & Business Media. This book was released on 2007-06-26 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: This popular, often cited text returns in a softcover edition to provide a thorough introduction to statistical physics and thermodynamics, and to exhibit the universal chain of ideas leading from the laws of microphysics to the macroscopic behaviour of matter. A wide range of applications illustrates the concepts, and many exercises reinforce understanding. Volume II applies statistical methods to systems governed by quantum effects, in particular to solid state physics, explaining properties due to the crystal structure or to the lattice excitations or to the electrons. The last chapters are devoted to non-equilibrium processes and to kinetic equations, with many applications included.
Author : Austin M 1876-1956 Patterson
Publisher : Scholar Select
ISBN 13 : 9781296567972
Total Pages : 340 pages
Book Rating : 4.5/5 (679 download)
Download or read book A German-English Dictionary for Chemists written by Austin M 1876-1956 Patterson and published by Scholar Select. This book was released on 2015-08-08 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : United Engineers & Constructors, inc
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.3/5 (129 download)
Download or read book Boiling Water Reactor Plant written by United Engineers & Constructors, inc and published by . This book was released on 1972 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Atkins
Publisher : OUP Oxford
ISBN 13 : 0191647632
Total Pages : 142 pages
Book Rating : 4.1/5 (916 download)
Download or read book Four Laws That Drive the Universe written by Peter Atkins and published by OUP Oxford. This book was released on 2007-09-06 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The laws of thermodynamics drive everything that happens in the universe. From the sudden expansion of a cloud of gas to the cooling of hot metal, and from the unfurling of a leaf to the course of life itself - everything is directed and constrained by four simple laws. They establish fundamental concepts such as temperature and heat, and reveal the arrow of time and even the nature of energy itself. Peter Atkins' powerful and compelling introduction explains what the laws are and how they work, using accessible language and virtually no mathematics. Guiding the reader from the Zeroth Law to the Third Law, he introduces the fascinating concept of entropy, and how it not only explains why your desk tends to get messier, but also how its unstoppable rise constitutes the engine of the universe.
Author : International Atomic Energy Agency
Publisher : Agency
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.3/5 (91 download)
Download or read book Advances in Uranium Ore Processing and Recovery from Non-conventional Resources written by International Atomic Energy Agency and published by Agency. This book was released on 1985 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert G. Arno
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.3/5 (243 download)
Download or read book Nonelectronic Parts Reliability Data written by Robert G. Arno and published by . This book was released on 1981 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report, organized in four major sections, presents reliability information based on field operation, dormant state and test data for more than 250 major nonelectronic part types. The four sections are Generic Data, Detailed Data, Application Data, and failure Modes and Mechanisms. Each device type contains reliability information in relation to the specific operational environments. (Author).
Author : International Atomic Energy Agency
Publisher : International Atomic Energy Agency
ISBN 13 : 9789201063205
Total Pages : 72 pages
Book Rating : 4.0/5 (632 download)
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.
