Download or read book Ecoulement turbulent de l air dans un tunnel bidimensionnel parois parall les written by Geneviève Comte-Bellot and published by . This book was released on 1959 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book coulement turbulent entre deux parois parall les written by Geneviève Comte-Bellot and published by . This book was released on 1965 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydraulic Research written by International Association for Hydraulic Research and published by . This book was released on 1960 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin recherches hydrauliques written by International Association for Hydraulic Research and published by . This book was released on 1959 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the International Association for Hydraulic Structures Research written by and published by . This book was released on 1960 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recherches Hydrauliques Hydraulic Research written by International Association for Hydraulic Research and published by . This book was released on 1960 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etude de l coulement turbulent dans un canal bidimensionnel deux parois rugueuses ou une paroi lisse et une paroi rugueuse written by Slimane Riahi and published by . This book was released on 1987 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Étude expérimentale de l'influence des rugosités sur le développement de la couche limite. Mesures directes du frottement pariétal sur une paroi lisse et sur une paroi rugueuse à l'aide d'une balance à éléments flottants. A partir de la numérisation du signal anémométrique, on déduit le taux de turbulence, les facteurs de dissymétrie et d'aplatissement. Mise en évidence des zones de production, de transfert et de dissipation de l'énergie turbulente.

Download or read book tude exp rimentale d un coulement turbulent en canal horizontal avec injection pari tale de bulles written by Céline Gabillet and published by . This book was released on 1998 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: La prédiction des écoulements turbulents à bulles nécessite de connaître et de modéliser les conditions aux limites à la paroi, en particulier lorsque les bulles sont générées à la paroi. Dans cette optique, nous étudions par voie expérimentale l'injection de petites bulles d'air à la paroi inférieure d'un canal horizontal dans un écoulement d'eau turbulent isotherme, bidimensionnel et établi. La distribution des phases, les vitesses et diamètres de bulles sont caractérisés à l'aide d'une sonde à fibres optiques. Les composantes de la vitesse du liquide ainsi que le frottement turbulent sont mesures par anémométrie a film chaud. Le développement longitudinal de la couche de bulles, ainsi que les mécanismes de mise en vitesse des inclusions sont étudiés. Nous montrons la similitude des profils de taux de vide et le rôle joué par les interactions entre les bulles et avec la turbulence du liquide, sur les transferts de quantité de mouvement entre les phases. L'excès des fluctuations de vitesse de la phase liquide près de la paroi est analysé et attribué en grande partie au glissement des bulles. Nous montrons qu'aucune influence de la rugosité des bulles à la paroi n'est à prendre en compte. La loi logarithmique des vitesses est valable, mais l'universalité de la pente est remise en cause. Le frottement turbulent est calculé et comparé aux mesures. Parmi les mécanismes prépondérants qui contribuent à l'augmentation du frottement de paroi, nous mettons en évidence en plus du rôle de l'allégement du fluide par l'injection des bulles, l'influence du développement de l'écoulement moyen. Un complément d'analyse est réalisé sur des mesures de la littérature en écoulement bouillant ascendant de freon 113. La turbulence de la phase liquide se trouve fortement modifiée à la fois par la nucléation de bulles de vapeur à la paroi et par les forces de gravite qui provoquent un glissement important des bulles.

Download or read book Etude exp rimentale de l coulement turbulent dans un divergent bidimensionnel paroouru par de l air written by Jean-Pierre Milliat and published by . This book was released on with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book tude exp rimentale de l coulement turbulent dans un divergent bidimensionnel parcouru par de l air written by Jean-Pierre Milliat and published by . This book was released on 1957 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etude experimentale de l ecoulement turbulent dans un divergent Bidimensionnel parcouru par de l air written by Jean-Pierre Milliat and published by . This book was released on 1956* with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etude de l tablissement du r gime turbulent entre deux parois parall les written by Larbi Labraga and published by . This book was released on 1984 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Etude expérimentale à faibles nombres de Reynolds. La numérisation du signal anémométrique instantané permet de calculer les moments statistiques jusqu'à l'ordre 4. Mesure directe du frottement pariétal, calcul des paramètres de la couche limite et des coefficients de dissymétrie et d'aplatissement des composantes de la vitesse. Caractérisation des différents régimes d'écoulement, localisation des zones laminaire, transitionnelle et turbulente

Download or read book Journal of Applied Mechanics written by and published by . This book was released on 1973 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes original research in all branches of mechanics including aerodynamics; aeroelasticity; boundary layers; computational mechanics; constitutive modeling of materials; dynamics; elasticity; flow and fracture; heat transfer; hydraulics; impact; internal flow; mechanical properties of materials; micromechanics; plasticity; stress analysis; structures; thermodynamics; turbulence; vibration; and wave propagation.

Download or read book Urban Climates written by T. R. Oke and published by Cambridge University Press. This book was released on 2017-09-14 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban Climates is the first full synthesis of modern scientific and applied research on urban climates. The book begins with an outline of what constitutes an urban ecosystem. It develops a comprehensive terminology for the subject using scale and surface classification as key constructs. It explains the physical principles governing the creation of distinct urban climates, such as airflow around buildings, the heat island, precipitation modification and air pollution, and it then illustrates how this knowledge can be applied to moderate the undesirable consequences of urban development and help create more sustainable and resilient cities. With urban climate science now a fully-fledged field, this timely book fulfills the need to bring together the disparate parts of climate research on cities into a coherent framework. It is an ideal resource for students and researchers in fields such as climatology, urban hydrology, air quality, environmental engineering and urban design.

Download or read book Ocean Atmosphere Interactions of Gases and Particles written by Peter S. Liss and published by Springer. This book was released on 2013-12-18 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oceans and atmosphere interact through various processes, including the transfer of momentum, heat, gases and particles. In this book leading international experts come together to provide a state-of-the-art account of these exchanges and their role in the Earth-system, with particular focus on gases and particles. Chapters in the book cover: i) the ocean-atmosphere exchange of short-lived trace gases; ii) mechanisms and models of interfacial exchange (including transfer velocity parameterisations); iii) ocean-atmosphere exchange of the greenhouse gases carbon dioxide, methane and nitrous oxide; iv) ocean atmosphere exchange of particles and v) current and future data collection and synthesis efforts. The scope of the book extends to the biogeochemical responses to emitted / deposited material and interactions and feedbacks in the wider Earth-system context. This work constitutes a highly detailed synthesis and reference; of interest to higher-level university students (Masters, PhD) and researchers in ocean-atmosphere interactions and related fields (Earth-system science, marine / atmospheric biogeochemistry / climate). Production of this book was supported and funded by the EU COST Action 735 and coordinated by the International SOLAS (Surface Ocean- Lower Atmosphere Study) project office.

Download or read book New Approaches and Concepts in Turbulence written by T. Dracos and published by Springer Science & Business Media. This book was released on 1993-09-01 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of a colloquium held in Monte Verità from September 9-13, 1991. Special care has been taken to devote adequate space to the scientific discussions, which claimed about half of the time available. Scientists from all over the world presented their views on the importance of kinematic properties, topology and fractal geometry, and on the dynamic behaviour of turbulent flows. They debated the importance of coherent structures and the possibility to incorporate these in the statistical theory of turbulence, as well as their significance for the reduction of the degrees of freedom and the prospective of dynamical systems and chaos approaches to the problem of turbulence. Also under discussion was the relevance of these new approaches to the study of the instability and the origin of turbulence, and the importance of numerical and physical experiments in improving the understanding of turbulence.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1967 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt: