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Book Att  nuation et dispersion des ondes P en milieu poreux partiellement satur

Download or read book Att nuation et dispersion des ondes P en milieu poreux partiellement satur written by Julien Barrière and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Afin d'analyser le rôle de la saturation partielle sur la vitesse de phase et l'atténuation des ondes P directes, nous avons élaboré une expérience en laboratoire dans la gamme du kiloHertz. Celle-ci permet une corrélation avec les mesures de terrain et limite les effets d'échelle induits par l'utilisation des traditionnelles mesures ultrasoniques. Le montage expérimental est composé d'un container rempli de sable, équipé d'accéléromètres et de sondes de teneur en eau. Une propagation d'onde est générée par une source mécanique constituée d'une bille en métal frappant une plaque de granite. Plusieurs cycles d'imbibition/drainage sont réalisés entre les saturations résiduelles en eau et en air. Une transformée continue en ondelette a été choisie pour le traitement des données sismiques et validée numériquement par une simulation de propagation d'ondes dans un milieu viscoélastique 2D (code Specfem2D). En imbibition et en drainage, la vitesse de phase décroît avec l'augmentation de la saturation, ce qui peut être expliqué par la limite Biot-Gassmann-Wood (BGW) de la théorie de Biot. Ce comportement, typique des mesures de terrain, indique qu'il est possible de considérer le mélange de fluides (eau et air) comme un fluide effectif. L'interprétation de l'atténuation est plus complexe et ne peut être expliquée par le mécanisme de relaxation de flux macroscopique de la théorie de Biot. Il est nécessaire d'introduire une contribution viscoélastique reliée aux pertes frictionelles grain-à-grain et décrite par un modèle à Q constant. De plus, un hystérésis entre imbibition et drainage est observé et expliqué en introduisant une perméabilité effective du mélange, dépendante des perméabilités relatives à l'eau et à l'air.

Book Advances in Hydroinformatics

Download or read book Advances in Hydroinformatics written by Philippe Gourbesville and published by Springer. This book was released on 2015-08-21 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of extended papers based on presentations given during the SIMHYDRO 2014 conference, held in Sophia Antipolis in June 2014. It focuses on the modeling and simulation of fast hydraulic transients, on 3D modeling, and on uncertainties and multiphase flows. The book explores both the limitations and performance of current models and presents the latest developments based on new numerical schemes, high-performance computing, multiphysics and multiscale methods, and better interaction with field or scale model data. It addresses the interests of practitioners, stakeholders, researchers and engineers active in this field.

Book In Vessel Melt Retention and Ex Vessel Corium Cooling  IAEA Tecdoc No  1906

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.

Book Plant Ecology

Download or read book Plant Ecology written by Unesco and published by . This book was released on 1955 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Monitoring soils in the environment with remote sensing and gis

Download or read book Monitoring soils in the environment with remote sensing and gis written by Richard Escadafal and published by IRD Orstom. This book was released on 1996 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: ISSS congress remote sensing

Book The Problems of the Arid Zone

Download or read book The Problems of the Arid Zone written by Unesco and published by paris. This book was released on 1962 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Chemical Composition of Snow in the Northern Sierra Nevada and Other Areas

Download or read book Chemical Composition of Snow in the Northern Sierra Nevada and Other Areas written by John Henry Feth and published by . This book was released on 1964 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Climatology

Download or read book Climatology written by Unesco and published by . This book was released on 1958 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Philostratus

    Book Details:
  • Author : Philostratus (the Athenian)
  • Publisher :
  • Release : 1912
  • ISBN :
  • Pages : 280 pages

Download or read book Philostratus written by Philostratus (the Athenian) and published by . This book was released on 1912 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Global and National Soils and Terrain Digital Databases  SOTER

Download or read book Global and National Soils and Terrain Digital Databases SOTER written by Food and Agriculture Organization of the United Nations. Land and Water Development Division and published by Food & Agriculture Org.. This book was released on 1993 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Cold Regions Science and Engineering Monograph

Download or read book Cold Regions Science and Engineering Monograph written by and published by . This book was released on 1969 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Climatologie Et Microclimatologie

Download or read book Climatologie Et Microclimatologie written by Unesco and published by . This book was released on 1958 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Physics of Clouds

    Book Details:
  • Author : B.J. Mason
  • Publisher : OUP Oxford
  • Release : 2010-05-20
  • ISBN : 019958804X
  • Pages : 688 pages

Download or read book The Physics of Clouds written by B.J. Mason and published by OUP Oxford. This book was released on 2010-05-20 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cloud physics is concerned with the processes responsible for the formation of clouds and the release of precipitation. This classic book gives a comprehensive account of research on the microphysical processes of nucleation, condensation, droplet growth, initiation and growth of snow crystals, and the mechanisms of precipitation release.

Book Project Skywater Biennial Report

Download or read book Project Skywater Biennial Report written by United States. Atmospheric Water Resources Program and published by . This book was released on 1973 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1967- issued in 2 parts: v. 1, Summary; v. 2 Contractor reports

Book Analecta  Or  Materials For a History of Remarkable Providences  Mostly Relating to Scotch Ministers and Christians

Download or read book Analecta Or Materials For a History of Remarkable Providences Mostly Relating to Scotch Ministers and Christians written by Robert Wodrow and published by BoD – Books on Demand. This book was released on 2024-05-25 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprint of the original, first published in 1842.

Book Environmental Physiology and Psychology in Arid Conditions

Download or read book Environmental Physiology and Psychology in Arid Conditions written by Unesco and published by . This book was released on 1963 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non Aboriginal material.