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Modification Des Caracteristiques Dune Turbulence Sous Linfluence Des Particules Solides En Suspension
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Book Synopsis Modification des caractéristiques d'une turbulence sous l'influence des particules solides en suspension by : Slobodan Petkovic
Download or read book Modification des caractéristiques d'une turbulence sous l'influence des particules solides en suspension written by Slobodan Petkovic and published by . This book was released on 1972 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modification des caractéristiques d'une turbulence sous l'influence de particules solides en suspension by : S. Petkovič
Download or read book Modification des caractéristiques d'une turbulence sous l'influence de particules solides en suspension written by S. Petkovič and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1973 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modification des caractéristiques d'une turbulence sous l'influence de particules solides en suspension by : Slobodan Petković
Download or read book Modification des caractéristiques d'une turbulence sous l'influence de particules solides en suspension written by Slobodan Petković and published by . This book was released on 1972 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mobile Barrages and Intakes on Sediment Transporting Rivers by : M. Bouvard
Download or read book Mobile Barrages and Intakes on Sediment Transporting Rivers written by M. Bouvard and published by Routledge. This book was released on 2017-10-05 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid growth in water requirements makes it necessary to increase the amount of water drawn from rivers. The dams necessary for capturing river water have to be built to resist damage when large floods occur, and an idea of the possible destructive power of floods is given by the front photograph. The need for protection results in thick sill structures fitted with gates, and ""upstream"" and ""downstream"" cut-off walls. Sediment transported by rivers settles forming deposits behind dams, where flow velocities decrease. On the other hand, where flow velocities are high through hydraulic machinery (pums and turbines) fed from the dam, it can be necessary to remove even fine sand from the water, and also to remove floating debris. Various hydro-mechanical installations (including gates and screens) are introduced into the flow circuits to deal with sediment and debris problems.Many emperical solutions to definition of very important details complement standard design procedures. Understanding of their use is facilitated by numerous illustrations.
Book Synopsis Multi-phase Transport by : T. Nejat Veziroğlu
Download or read book Multi-phase Transport written by T. Nejat Veziroğlu and published by . This book was released on 1980 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydata written by and published by . This book was released on 1973 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Berichte Über Di Tagung by : International Association for Hydraulic Research
Download or read book Berichte Über Di Tagung written by International Association for Hydraulic Research and published by . This book was released on 1973 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography and Index of Geology by :
Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1977 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluid-particle interactions by : Martín Obligado
Download or read book Fluid-particle interactions written by Martín Obligado and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse est organisée en deux parties. Après une brève introduction théorique (chapitre 1) et une discussion présentant la soufflerie du LEGI et des techniques expérimentales utilisées (chapitre 2), une première partie étudie les effets individuels des particules dans les écoulements tantôt laminaires et turbulents. Dans une seconde partie je me suis intéressé aux effets collectifs d'une population dense d'inclusions en interaction avec un champ turbulent.Dans le chapitre 3, nous montrons que l'équilibre d'un disque pendulaire faisant face à un écoulement présentant une vitesse moyenne présente un comportement bi-stable et hystérétique. Nous donnons une interprétation simple de ce comportement en termes d'une description par deux puits de potentiel, nécessitant uniquement de connaître la dépendance angulaire du coefficient de trainée normale d'une plaque statique inclinée. Nous étudions l'influence de la turbulence sur l'équilibre du pendule en général et sur la bi-stabilité observée en particulier.La dynamique des objets tractés dans un environnement fluide est d'intérêt pour de nombreuses situations pratiques. Les chapitres 4,5 et 6 concernent l'étude expérimentale de l'équilibre et de la stabilité de la trajectoire d'une sphère tractée à vitesse constante. Dans le chapitre 4, nous avons vu que le sillage d'une sphère peut produire un mouvement hélicoïdal d'une sphère remorqué par un fil. Nous avons constaté qu'il existe un nombre de Reynolds (défini avec le diamètre de la particule et la vitesse moyenne de l'écoulement) particulier pour activer cette motion instable. Une trajectoire en trois dimensions est reconstruite avec un dispositif expérimental extrêmement simple, utilisé pour la caractérisation de la forme de la trajectoire des particules. Dans le chapitre 5, nous étudions expérimentalement l'équilibre et la stabilité de la trajectoire d'une sphère remorqué à une vitesse constante dans la avec un rapport longueur - diamètre sans précédent. En ce chapitre, nous étudions les instabilités développées dans le fil pour un écoulement laminaire. Diffèrent types d'instabilités ont été trouvés dans cette expérience. Dans le chapitre 6, le même système est étudié, mais l'écoulement environnant est turbulent. Nous nous concentrons sur la comparaison entre la dynamique turbulente de la sphère tractée et d'une sphère librement advectèe. Nos résultats sont en accord avec un scénario de filtrage résultant du temps de réponse visqueuse d'une particule d'inertie dont la dynamique est couplée au fluide environnant par la force de traînée. Une caractéristique frappante des écoulements turbulents chargés de particules inertielles est la concentration préférentielle qui conduit à de très fortes hétérogénéités du champ de concentration en particules à différentes échelles. Les diagrammes de Voronoi ont été utilisés pour caractériser quantifier ce phénomène.En ce qui concerne les effets collectifs, trois écoulements différents ont été étudiés : bulles d'air (particules moins denses que le fluide, avec une taille de l'ordre de l ́échelle de Kolmogorov) dans un canal a eau (chapitre 7), des particules solides légèrement plus denses que le fluide et diamètre supérieur à l ́échelle de Kolmogorov dans une écoulement de von Kármán (chapitre 8) et gouttelettes d'eau dans la soufflerie (chapitre 9) ; de particules beaucoup plus denses que le fluide et diamètre inférieur à l'échelle de Kolmogorov. Enfin, nous proposons une nouvelle méthode de reconstruction des champs de concentration des particules dans les expériences par analogie avec le fonctionnement des caméras linéaire, et en exploitant l'hypothèse de Taylor dans la soufflerie. Cette nouvelle approche nous permet de reconstruire des champs de particules de plusieurs mètres de long. Ces champs permettent d'analyser la formation des superclusters. Nous montrons en effet que les clusters tendent eux-mêmes à s'organiser en superclusters (amas d'amas).
Book Synopsis The Proceedings of the Coastal Sediments 2011 by : Ping Wang
Download or read book The Proceedings of the Coastal Sediments 2011 written by Ping Wang and published by World Scientific. This book was released on 2011-01-01 with total page 921 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains nearly 200 papers on cutting-edge research presented at the seventh international Symposium on Coastal Engineering and Science of Coastal Sediment Processes, held May 26, 2011, in Miami, Florida, USA. This technical specialty conference was devoted to promoting an interdisciplinary exchange of state-of-the-art knowledge among researchers in the fields of coastal engineering, geology, oceanography, and related disciplines, with a theme of bringing together theory and practice. Focusing on the physical aspects of sediment processes in various coastal environments, this three-volume conference proceedings provides findings from the latest research and newest engineering applications. Session topics cover a wide range including barrier-island morphodynamics and evolution, beach nourishment and shore protection, coastal dunes, cohesive sediment transport, field and laboratory measurements of sediment transport processes and numerical modeling, gravel transport, large-scale and long-term coastal changes, LiDAR and remote sensing, longshore and cross-shore sediment transport, marsh and wetlands, regional sediment management, river deltas, sea-level changes, shelf and sand bodies, shoreline changes, tidal inlets and navigation channels. A special session on recent research findings at the Northern Gulf of Mexico is also included.
Book Synopsis Secondary Settling Tanks by : G. A. Ekama
Download or read book Secondary Settling Tanks written by G. A. Ekama and published by International Water Assn. This book was released on 1997-01-01 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The secondary settling tank (SST) plays a major ro
Author :Canada. Department of Fisheries and Oceans Publisher :Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir ISBN 13 : Total Pages :376 pages Book Rating :4.:/5 (31 download)
Book Synopsis Le Golfe Du Saint-Laurent--petit Océan Ou Grand Estuaire? by : Canada. Department of Fisheries and Oceans
Download or read book Le Golfe Du Saint-Laurent--petit Océan Ou Grand Estuaire? written by Canada. Department of Fisheries and Oceans and published by Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir. This book was released on 1991 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a workshop, the scientific reviews and the contributed papers presented at the symposium. The document presents a brief historical summary of marine research in the Gulf; reports the discussions, conclusions and recommendations of the different working groups on oceanography (physics, biology, chemistry and sedimentology) and on the fishery (fish and invertebrates); then presents the discussions of each multidisciplinary working group, centered around how the St. Lawrence system may be used as a natural laboratory which will contribute to the solution of major long-term problems of conservation of natural resources and of the quality of the environment.
Book Synopsis Flows and Chemical Reactions in Heterogeneous Mixtures by : Roger Prud'homme
Download or read book Flows and Chemical Reactions in Heterogeneous Mixtures written by Roger Prud'homme and published by John Wiley & Sons. This book was released on 2014-12-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book - a sequel of previous publications 'Flows and Chemical Reactions' and 'Chemical Reactions in Flows and Homogeneous Mixtures' - is devoted to flows with chemical reactions in heterogeneous environments. Heterogeneous media in this volume include interfaces and lines. They may be the site of radiation. Each type of flow is the subject of a chapter in this volume. We consider first, in Chapter 1, the question of the generation of environments biphasic individuals: dusty gas, mist, bubble flow. Chapter 2 is devoted to the study at the mesoscopic scale: particle-fluid exchange of momentum and heat with determination of the respective exchange coefficients. In Chapter 3, we establish simplified equations of macroscopic balance for mass, for the momentum and energy, in the case of particles of one size (monodisperse suspension). Radiative phenomena are presented in Chapter 5.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Book Synopsis Emulsion Science by : Jerôme Bibette
Download or read book Emulsion Science written by Jerôme Bibette and published by Springer. This book was released on 2003-07-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions occur either as end products or during the processing of products in a huge range of areas including the food, agrochemical, pharmaceuticals, paints and oil industries. As end products, emulsions allow to avoid organic solvent in processing hydrophobic coatings. Emulsion technology is a suitable approach to vehicle viscous phases. It is also a remarkable mean of targeting actives or capturing specific species. The range of applications of emulsions progresses and their manufacturing becomes more and more sophisticated. Besides this broad domain of technological interest, emulsions are raising a variety of fundamental questions at the frontier between physic and chem istry. Indeed, as a class of soft colloidal materials, emulsions science is linked to various aspects of these disciplines: phase transitions, surface forces and wetting, metastability and hydrodynamic instabilities, mechanical properties and flow. The aim of this book is to review the main important concepts governing emulsion science. In Chapter 2, repulsive interactions between liquid films are discussed as well as adhesive interaction related to wetting. In Chap ter 3, consequences of weak and strong attractions are presented, related to the well accepted liquid solid transition analogy. In Chapter 4, the basics of both bulk compressibility and shear elasticity are presented, the role of disorder being the most important aspect of the elastic behavior of these soft systems. In Chapter 5 the central question of the emulsion lifetime related to metastability is discussed.
Book Synopsis Guidelines for Grit Sampling and Characterization by : Water Environment Federation
Download or read book Guidelines for Grit Sampling and Characterization written by Water Environment Federation and published by . This book was released on 2016-08-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest methods for grit sampling and characterization