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Author: Constantin Oltean
Publisher:
ISBN:
Category :
Languages : fr
Pages : 198
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Book Description
AFIN D'ETUDIER LES MECANISMES ELEMENTAIRES DE TRANSPORT DE DEUX FLUIDES MISCIBLES ET NON-REACTIFS DANS UN MILIEU POREUX HOMOGENE ET SATURE, UN PROGRAMME EXPERIMENTAL A ETE MIS AU POINT. UN MODELE PHYSIQUE 3D CONCU A L'ECHELLE DE LABORATOIRE (1,63 0,67 0,40 M#3) A PERMIS D'ANALYSER ET D'OBSERVER LE COMPORTEMENT D'UN POLLUANT QUI TRAVERSE LE MILIEU POREUX, EN PRENANT EN COMPTE LE CONTRASTE DE MASSE VOLUMIQUE ET DE VISCOSITE. L'ANALYSE PORTE SUR L'IDENTIFICATION DES PARAMETRES DE TRANSPORT, I.E.: LA VITESSE LONGITUDINALE APPARENTE ET LE COEFFICIENT DE DISPERSION LONGITUDINAL APPARENT LORSQU'IL S'AGIT DES EXPERIENCES DU TYPE DEPLACEMENT (INJECTION REALISEE DANS LA SECTION AMONT DE LA VEINE DU MILIEU POREUX), EN UTILISANT DIFFERENTES METHODES DE TRAITEMENT MONODIMENSIONNEL. L'OBSERVATION PORTE SUR L'EXTENSION ET LE DEVELOPPEMENT DE LA ZONE DE MELANGE LORSQU'IL S'AGIT DES EXPERIENCES AVEC INJECTION PONCTUELLE REALISEES DANS UNE SOURCE SITUEE SUR LE DESSUS DE LA VEINE DE MILIEU POREUX. GRACE AU PROGRAMME EXPERIMENTAL, UN MODELE DE SIMULATION 3D A ETE DEVELOPPE PUIS VALIDE. LE MODELE MATHEMATIQUE REALISE LE COUPLAGE ENTRE L'EQUATION HYDRODYNAMIQUE ET L'EQUATION DU TRANSPORT DU SOLUTE, EN TENANT COMPTE D'UN CONTRASTE DE MASSE VOLUMIQUE ET DE VISCOSITE. LA VARIATION DE LA MASSE VOLUMIQUE ET DE LA VISCOSITE EST SUPPOSEE LINEAIRE EN FONCTION DE LA CONCENTRATION DANS LA ZONE DE MELANGE
Author: Constantin Oltean
Publisher:
ISBN:
Category :
Languages : fr
Pages : 198
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Book Description
AFIN D'ETUDIER LES MECANISMES ELEMENTAIRES DE TRANSPORT DE DEUX FLUIDES MISCIBLES ET NON-REACTIFS DANS UN MILIEU POREUX HOMOGENE ET SATURE, UN PROGRAMME EXPERIMENTAL A ETE MIS AU POINT. UN MODELE PHYSIQUE 3D CONCU A L'ECHELLE DE LABORATOIRE (1,63 0,67 0,40 M#3) A PERMIS D'ANALYSER ET D'OBSERVER LE COMPORTEMENT D'UN POLLUANT QUI TRAVERSE LE MILIEU POREUX, EN PRENANT EN COMPTE LE CONTRASTE DE MASSE VOLUMIQUE ET DE VISCOSITE. L'ANALYSE PORTE SUR L'IDENTIFICATION DES PARAMETRES DE TRANSPORT, I.E.: LA VITESSE LONGITUDINALE APPARENTE ET LE COEFFICIENT DE DISPERSION LONGITUDINAL APPARENT LORSQU'IL S'AGIT DES EXPERIENCES DU TYPE DEPLACEMENT (INJECTION REALISEE DANS LA SECTION AMONT DE LA VEINE DU MILIEU POREUX), EN UTILISANT DIFFERENTES METHODES DE TRAITEMENT MONODIMENSIONNEL. L'OBSERVATION PORTE SUR L'EXTENSION ET LE DEVELOPPEMENT DE LA ZONE DE MELANGE LORSQU'IL S'AGIT DES EXPERIENCES AVEC INJECTION PONCTUELLE REALISEES DANS UNE SOURCE SITUEE SUR LE DESSUS DE LA VEINE DE MILIEU POREUX. GRACE AU PROGRAMME EXPERIMENTAL, UN MODELE DE SIMULATION 3D A ETE DEVELOPPE PUIS VALIDE. LE MODELE MATHEMATIQUE REALISE LE COUPLAGE ENTRE L'EQUATION HYDRODYNAMIQUE ET L'EQUATION DU TRANSPORT DU SOLUTE, EN TENANT COMPTE D'UN CONTRASTE DE MASSE VOLUMIQUE ET DE VISCOSITE. LA VARIATION DE LA MASSE VOLUMIQUE ET DE LA VISCOSITE EST SUPPOSEE LINEAIRE EN FONCTION DE LA CONCENTRATION DANS LA ZONE DE MELANGE
Author: J.M. Crolet
Publisher: Springer Science & Business Media
ISBN: 9401728569
Category : Science
Languages : en
Pages : 272
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Book Description
Porous media, and especially phenomena of transport in such materials, are an impor1ant field of interest for geologists, hydrogeologists, researchers in soil and fluid mechanics, petroleum and chemical engineers, physicists and scientists in many other disciplines. The development of better numerical simulation techniques in combination with the enormous expansion of computer tools, have enabled numerical simulation of transport phenomena (mass of phases and components, energy etc. ) in porous domains of interest. Before any practical application of the results of such simulations can be used, it is essential that the simulation models have been proven to be valid. In order to establish the greatest possible coherence between the models and the physical reality, frequent interaction between numericians, mathematicians and the previously quoted researchers, is necessary. Once this coherence is established, the numerical simulations could be used to predict various phenomena such as water management, propagation of pollutants etc. These simulations could be, in many cases, the only financially acceptable tool to carry out an investigation. Current studies within various fields of applications include not only physical comprehension aspects of flow and energy or solute transport in saturated or unsaturated media but also numerical aspects in deriving strong complex equations. Among the various fields of applications generally two types of problems can be observed. Those associated with the pollution of the environment and those linked to water management. The former are essentially a problem in industrialized countries, the latter are a major source of concern in North-Africa.
Author: J.M. Crolet
Publisher: Springer Science & Business Media
ISBN: 9401711143
Category : Science
Languages : en
Pages : 372
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Book Description
The first Symposium on Recent Advances in Problems of Flow and Transport in Porous Media was held in Marrakech in June '96 and has provided a focus for the utilization of computer methods for solving the many complex problems encountered in the field of solute transport in porous media. This symposium has been successful in bringing together scientists, physicists, hydrogeologists, researchers in soil and fluid mechanics and engineers involved in this multidisciplinary subject. It is clear that the utilization of computer-based models in this domain is still rapidly expanding and that new and novel solutions are being developed. The contributed papers which form this book reflect the recent advances, in particular with respect to new methods, inverse problems, reactive transport, unsaturated media and upscaling. These have been subdivided into the following sections: I. Numerical methods II. Mass transport and heat transfer III. Comparison with experimentation and simulation of real cases This book contains reviewed articles of the top presentations held during the International Symposium on Computer Methods in Porous Media Engineering which took place in Giens (France) in October 1998. All of the presentations and the optimism shown during the meeting provided further evidence that computer modeling is making remarkable progress and is indeed becoming an essential toolkit in the field of porous media and solute transport. I believe that the content of this book provides evidence of this and furthermore gives a comprehensive review of the theoretical developments and applications.
Author: Helmut Kobus
Publisher: Springer Science & Business Media
ISBN: 3642457509
Category : Science
Languages : en
Pages : 366
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Book Description
The complex topic of in-situ subsurface remediation technologies has been ad dressed at an international symposium at the Universitat Stuttgart on September 26 and 27, 1995, on the occasion of the inauguration of the research facility VEGAS (Versuchseinrichtung zur Grundwasser- und Altlastensanierung). The results are contained in this book with 22 contributions from leading experts in the field from Europe and North America. The book illustrates the role of large-scale experiments in groundwater and subsurface remediation research. The subtopics address the various links between conventional laboratory experiments, technology-scale experiments and field-site studies, showing the contribution of large-scale experiments to bridging the gap between small-scale investigations and large-scale field investigations (upscaling). The interdisciplinary nature of the problems requires a multidisciplinary approach. Therefore, the idea has been followed to bring together the various disciplines in volved in the different aspects and facets of subsurface flow, transport and trans as hydraulics and hydrology, physics, formation, involving such diverse disciplines chemistry, microbiology, geology, industrial, chemical and hydraulic engineering, mathematics and hydroinformatics. The individual contributions from these di versified fields address the subject from different angles in an attempt to form a coherent picture of the various aspects of the complex problems of subsurface remediation. The focus is on research approaches and strategies with respect to the development of new and improved technologies and to the role of large-scale experiments in research and application.
Author:
Publisher:
ISBN:
Category : Sewage
Languages : en
Pages : 840
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Book Description
Author: Rudi Rajar
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 840
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Book Description
Author:
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 758
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Book Description
Author: Canada. Department of Fisheries and Oceans
Publisher: Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir
ISBN:
Category : Science
Languages : fr
Pages : 376
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Book Description
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.
Author: David Looseley
Publisher: Oxford University Press
ISBN: 1781382573
Category : Biography & Autobiography
Languages : en
Pages : 264
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Book Description
The world-famous French singer Édith Piaf (1915-63) was never just a singer. This book suggests new ways of understanding her, her myth and her meanings over time at home and abroad, by proposing the notion of an 'imagined Piaf.
Author: Willem Willems
Publisher:
ISBN: 9789088903861
Category : Business & Economics
Languages : en
Pages : 434
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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
