Écoulement autour de quelques sphères en régime de sédimentation PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Écoulement autour de quelques sphères en régime de sédimentation PDF full book. Access full book title Écoulement autour de quelques sphères en régime de sédimentation by Emmanuel Roy (auteur d'une thèse en mécanique). Download full books in PDF and EPUB format.
Author: Emmanuel Roy (auteur d'une thèse en mécanique)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
Get Book Here
Book Description
aNous visualisons dans cette thèse la sédimentation de quelques sphères dans le régime de Navier-Stokes grâce à un dispositif expérimental nouveau. Nous mettons en évidence les différentes interactions hydrodynamiques particules-fluide, particules-particules et particules-paroi qui apparaissent dans l'écoulement avec des effets dus à l'inertie du fluide. Celles-ci modifient localement le réarrangement de plusieurs sphères en sédimentation. Notre étude porte sur la mesure du champ des vecteurs-vitesse du fluide autour des sphères dans un écoulement bidimensionnel entre deux parois parallèles dans un espace confiné. La méthode utilisée est la visualisation par suivi de trajectoires particulaires et le traitement d'images. L'exploitation des résultats expérimentaux est comparée à des calculs numériques en simulation directe avec une méthode par suivi d'interface.
Author: Emmanuel Roy (auteur d'une thèse en mécanique)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
Get Book Here
Book Description
aNous visualisons dans cette thèse la sédimentation de quelques sphères dans le régime de Navier-Stokes grâce à un dispositif expérimental nouveau. Nous mettons en évidence les différentes interactions hydrodynamiques particules-fluide, particules-particules et particules-paroi qui apparaissent dans l'écoulement avec des effets dus à l'inertie du fluide. Celles-ci modifient localement le réarrangement de plusieurs sphères en sédimentation. Notre étude porte sur la mesure du champ des vecteurs-vitesse du fluide autour des sphères dans un écoulement bidimensionnel entre deux parois parallèles dans un espace confiné. La méthode utilisée est la visualisation par suivi de trajectoires particulaires et le traitement d'images. L'exploitation des résultats expérimentaux est comparée à des calculs numériques en simulation directe avec une méthode par suivi d'interface.
Author: Télesphore Sime-Ngando
Publisher: Springer
ISBN: 3319399616
Category : Science
Languages : en
Pages : 422
Get Book Here
Book Description
This book represents the first multidisciplinary scientific work on a deep volcanic maar lake in comparison with other similar temperate lakes. The syntheses of the main characteristics of Lake Pavin are, for the first time, set in a firmer footing comparative approach, encompassing regional, national, European and international aquatic science contexts. It is a unique lake because of its permanently anoxic monimolimnion, and furthermore, because of its small surface area, its substantially low human influence, and by the fact that it does not have a river inflow. The book reflects the scientific research done on the general limnology, history, origin, volcanology and geological environment as well as on the geochemistry and biogeochemical cycles. Other chapters focus on the biology and microbial ecology whereas the sedimentology and paleolimnology are also given attention. This volume will be of special interest to researchers and advanced students, primarily in the fields of limnology, biogeochemistry, and aquatic ecology.
Author: Helene Paquet
Publisher: Springer Science & Business Media
ISBN: 3642605257
Category : Science
Languages : en
Pages : 523
Get Book Here
Book Description
Clays and soils are of great importance in various scientific fields, such as agriculture and environmental science, and in mineral deposits. Students and close collaborators of Georges Millot, the eminent French clay sedimentologist, have put together a book with topics ranging from weathering processes and diagenetic evalution of sediments to sedimentary mineral deposits. The book is of interest to practitioners, advanced students as well as teachers in the above fields.
Author:
Publisher:
ISBN:
Category : Water
Languages : fr
Pages : 658
Get Book Here
Book Description
Author: Stefan Kuks
Publisher: Springer Science & Business Media
ISBN: 9781402024832
Category : Technology & Engineering
Languages : en
Pages : 388
Get Book Here
Book Description
All over the world countries struggle with water stress. Problems vary from water scarcity and a degrading water quality, to floods and a rising sea level due to climate change. The European Union adopted a Water Framework Directive to improve the sustainability of water management in its member states. Water management should be coordinated at the level of river basins as a whole. Interests of various user groups should be better represented. River basin visions should take into account the impact of all human activities on the status of the resource. Water legislation needs streamlining and more focus on its implementation. The European Union advocates regulating water prices by charging the costs of water services on the basis of full cost recovery and the polluter pays principle. This book examines the development of water management in the Netherlands, Belgium, France, Spain, Italy and Switzerland. It is based on the European research project EUWARENESS. The authors apply a theoretical framework for the analysis of institutional regimes, water governance and property rights. The evolution of national water resource regimes is described over a period of almost 200 years (1800-2000). The long-term perspective enables the reader to see the conditions under which regime transformation and paradigm change are made possible. The book also includes a critical analysis of policy making by the European Union, and a comparative review and analysis of regime development in the six countries involved. This book is followed by another volume published with Kluwer Academic Publishers on "Integrated Governance and Water Basin Management", edited by Hans Bressers and Stefan Kuks.
Author: Willem Willems
Publisher:
ISBN: 9789088903861
Category : Business & Economics
Languages : en
Pages : 434
Get Book Here
Book Description
Water is vital for life, and its availability has been a concern for mankind throughout the ages. Its presence has always been ascertained in a variety of ways and the development of human society everywhere is connected with various forms of water management. Man also needed to manage water to find protection from its dangers and the need for that is increasing. In the coming decades, the impact of climate change is expected to intensify floods and droughts, affect groundwater resources, raise sea levels, increase pollution and enhance the frequency and magnitude of disasters. Societies around the world are challenged to adapt to these threats to ensure water security, economic prosperity and environmental and cultural sustainability. This book deals with the heritage of water management and the use that was made of water, as well as the impact of water management on heritage. An example of the former may be an ancient irrigation system in the Filipines or in the Middle East that still functions today, while the latter may reflect the importance of maintaining groundwater levels for the preservation of organic remains on archaeological sites or of wooden piles underneath standing buildings. In either case the papers in this book reflect the dynamic nature of water, and hence the equally dynamic relation between water management and heritage. This publication follows up on a Heritage and Water conference in Amsterdam, the first of its kind. Its main purpose is to credibly present the importance and value of heritage and historical experience for water and sustainable development, and vice versa, present the importance of water management for the protection of heritage. It presents evolving insights and concepts about Water and about Heritage from a variety of disciplines, policy and public perspectives illustrated with cases studies and aims to connect decision makers with experts such as engineers, archaeologists, historians, geographers, ecologist and landscape architects
Author:
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 356
Get Book Here
Book Description
Author: A. Tremblay
Publisher: Springer Science & Business Media
ISBN: 3540266437
Category : Science
Languages : en
Pages : 743
Get Book Here
Book Description
In a time when an unquestionable link between anthropogenic emissions of greenhouse gases and climatic changes has finally been acknowledged and * widely documented through IPCC reports, the need for precise estimates of greenhouse gas (GHG) production rates and emissions from natural as well as managed ecosystems has risen to a critical level. Future agreements between nations concerning the reduction of their GHG emissions will - pend upon precise estimates of the present level of these emissions in both natural and managed terrestrial and aquatic environments. From this viewpoint, the present volume should prove to a benchmark contribution because it provides very carefully assessed values for GHG emissions or exchanges between critical climatic zones in aquatic en- ronments and the atmosphere. It also provides unique information on the biases of different measurement methods that may account for some of the contradictory results that have been published recently in the literature on this subject. Not only has a large array of current measurement methods been tested concurrently here, but a few new approaches have also been developed, notably laser measurements of atmospheric CO concentration 2 gradients. Another highly useful feature of this book is the addition of - nitoring and process studies as well as modeling.
Author: John Joseph Clague
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 284
Get Book Here
Book Description
The 16 papers in this volume constitute a summary of recent research on the geological architecture and environment of the Fraser River delta, and the physical and chemical processes operating on it. The first two papers are overviews of the geological and seismic setting of the delta. The next two papers summarize present-day sedimentary environments on the delta. A third group of papers covers the geological architecture, or lithostratigraphy, of the delta and the biological structure or biofacies of the delta. The final group of papers is concerned with natural hazards and environmental issues, including earthquakes, geotechnical stability, and seafloor sediment geochemistry.
Author: Monique Mainguet
Publisher: Springer Science & Business Media
ISBN: 3662039060
Category : Science
Languages : en
Pages : 320
Get Book Here
Book Description
At the intersection of environmental science and human biology, this book deals with dry ecosystems, the societies so affected, and the inventiveness of those living under such conditions. It also tries to answer the question of whether long-lasting development is possible in dry environments.
