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Etudes Theorique Et Experimentale Du Transport De Fluides Miscibles En Cellule Hele Shaw
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Book Synopsis Études théorique et expérimentale du transport de fluides miscibles en cellule Hele-Shaw by : Hung Truong Trieu
Download or read book Études théorique et expérimentale du transport de fluides miscibles en cellule Hele-Shaw written by Hung Truong Trieu and published by . This book was released on 2011 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans cette thèse, nous avons étudié expérimentalement, numériquement et théoriquement la sédimentation d'un soluté en cellule de Hele-Shaw, modèle analogue de milieu poreux, avec un écoulement zonal horizontal. Une cellule, alimentée par deux grands réservoirs assurant un écoulement zonal uniforme, a été réalisée au laboratoire. La vitesse a été mesurée par PIV. L'injection d'une solution saline dans cet écoulement permet de visualiser la propagation du panache de pollution, et de mesurer le champ de concentration par LIF. Trois configurations typiques ont été observées : panache sans digitation (« stable »), avec une seule digitation (« faiblement instable »), et avec de nombreuses digitations (« fortement instable »). L'influence du contraste de densité, de la vitesse zonale, et du débit d'injection sur la stabilité du panache a été analysée. Ces résultats ont été comparés à des simulations numériques sous COMSOL Multiphysics®. Les champs de concentration simulés sont en accord quantitatif avec les champs expérimentaux. Ces simulations ont de plus permis d'étudier l'influence de l'anisotropie du tenseur de dispersion sur la stabilité du panache. Une étude théorique linéaire, effectuée à partir d'un écoulement de base unidirectionnel et quasi-stationnaire, est venue compléter ces résultats. Elle montre que le panache est toujours convectivement instable pour les valeurs des paramètres considérées, et permet de retrouver et de quantifier les principaux résultats mis en évidence lors des études expérimentale et numérique, comme l'effet stabilisant de la dispersivité longitudinale ou l'effet déstabilisant du contraste de densité
Book Synopsis Transport de fluides miscibles à propriétés physiques variables en cellule Hele-Shaw.Comparaisons entre simulations numériques et mesures par LIF by : Jon Mainhagu
Download or read book Transport de fluides miscibles à propriétés physiques variables en cellule Hele-Shaw.Comparaisons entre simulations numériques et mesures par LIF written by Jon Mainhagu and published by . This book was released on 2009 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'étude décrite dans cette thèse porte sur l'injection ponctuelle d'une solution saline au sein d'une cellule dite de Hele-Shaw, afin de caractériser le comportement dispersif d'un polluant en milieu poreux. L'approche expérimentale employée est basée sur l'implémentation originale d'un dispositif de Fluorescence Induite par Laser (LIF) dans la cellule. La mise en place d'un protocole de mesure efficace permet de mener une analyse quantitative des résultats expérimentaux. En outre, en appliquant la méthode des moments, il est possible de caractériser avec précision le comportement dispersif de la zone de mélange de la solution injectée. Parallèlement aux expériences, à l'aide du code numérique FRIPE, les injections ont été simulées numériquement. L'analyse quantitative a été appliquée à ces dernières. Une comparaison poussée des résultats expérimentaux et numériques a donc été effectuée, du point de vue qualitatif mais aussi sur l'expression de la dispersion du panache de la zone de mélange de la solution.
Book Synopsis DEPLACEMENT ET INSTABILITES DE FLUIDES MISCIBLES ET IMMISCIBLES EN CELLULE DE HELE-SHAW by : ERIC.. LAJEUNESSE
Download or read book DEPLACEMENT ET INSTABILITES DE FLUIDES MISCIBLES ET IMMISCIBLES EN CELLULE DE HELE-SHAW written by ERIC.. LAJEUNESSE and published by . This book was released on 1999 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE MEMOIRE PRESENTE UNE ETUDE EXPERIMENTALE DU DEPLACEMENT DE FLUIDES EN CELLULE DE HELE-SHAW (DEUX PLAQUES SEPAREES PAR UNE FAIBLE EPAISSEUR). DANS LA PREMIERE PARTIE, NOUS ETUDIONS LA DESTABILISATION DU DOIGT DE SAFFMAN-TAYLOR EN SECTEUR ANGULAIRE OBSERVE POUR DES FLUIDES NON MISCIBLES. NOUS MONTRONS QUE LA FORME DE LA LIGNE CENTRALE (FJORD) QUI DIVISE LE DOIGT EN DEUX BRANCHES SECONDAIRES EST SEMBLABLE A LA TRAJECTOIRE D'UNE PARTICULE ADVECTEE SUR L'INTERFACE D'UN DOIGT QUI RESTERAIT STABLE. CES FJORDS SE COMPORTENT COMME DES MURS VIRTUELS ENTRE LESQUELS DE NOUVELLES BRANCHES SECONDAIRES SE DEVELOPPENT DE SORTE QUE LE MOTIF SE COMPLEXIFIE RAPIDEMENT. NOUS AVONS CALCULE LA FONCTION DE DISTRIBUTION DE LA TAILLE DES BRANCHES SECONDAIRES. LES RESULTATS, EN ACCORD AVEC LES OBSERVATIONS EXPERIMENTALES, MONTRENT QUE, EN CANAL LINEAIRE, LA PROBABILITE D'OBSERVER UNE BRANCHE DE TAILLE SUPERIEURE A LA LARGEUR DU CANAL EST NEGLIGEABLE. DANS LES SECTEURS DE TRES GRANDS ANGLES, ON OBSERVE LA FORMATION DE FJORDS INFINIS SEPARANT DES STRUCTURES DE GRANDE TAILLE. LA SECONDE PARTIE DE CE MEMOIRE EST CONSACREE A L'ETUDE DU DEPLACEMENT DE FLUIDES MISCIBLES EN CELLULE RECTANGULAIRE VERTICALE DANS LA LIMITE DES GRANDS NOMBRES DE PECLET (DIFFUSION NEGLIGEABLE) ET EN GRAVITE STABILISANTE. IL SE FORME ALORS UNE MINCE LANGUE DE FLUIDE INJECTE ENTRE LES PLAQUES DE LA CELLULE. L'AVANCEE ET L'EPAISSEUR DE CETTE LANGUE SONT MESUREES PAR ABSORPTION DE LA LUMIERE. NOUS PRESENTONS UN MODELE, CONFIRME PAR LES EXPERIENCES, QUI PREVOIT L'EXISTENCE DE TROIS DOMAINES DIFFERENTS EN FONCTION DES VALEURS DES PARAMETRES DE CONTROLE. LE PREMIER CORRESPOND A UNE INTERFACE DONT LA FORME EST CELLE D'UNE LANGUE AUTOSIMILAIRE. LE SECOND DOMAINE EST MARQUE PAR LA PRESENCE D'UNE POINTE DE FAIBLE DIAMETRE. LE TROISIEME DOMAINE CORRESPOND A LA FORMATION D'UN MOTIF DE DIGITATION A TROIS DIMENSIONS, DE LONGUEUR D'ONDE EGALE A CINQ FOIS L'EPAISSEUR DE LA CELLULE.
Book Synopsis The Image Processing Handbook by : John C. Russ
Download or read book The Image Processing Handbook written by John C. Russ and published by CRC Press. This book was released on 2006-12-19 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its fifth edition, John C. Russ‘s monumental image processing reference is an even more complete, modern, and hands-on tool than ever before. The Image Processing Handbook, Fifth Edition is fully updated and expanded to reflect the latest developments in the field. Written by an expert with unequalled experience and authority, it offers clea
Book Synopsis Fundamentals of Heat and Mass Transfer by : S. C. Bhatia
Download or read book Fundamentals of Heat and Mass Transfer written by S. C. Bhatia and published by . This book was released on 2002-02-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physical Properties of Amorphous Materials by : David Adler
Download or read book Physical Properties of Amorphous Materials written by David Adler and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Institute for Amorphous Studies was founded in 1982 as the international center for the investigation of amorphous mate rials. It has since played an important role in promoting the und er standing of disordered matter in general. An Institute lecture series on "Fundamentals of Amorphous Materials and Devices" was held during 1982-83 with distinguished speakers from universities and industry. These events were free and open to the public ,and were attended by many representatives of the scientific community. The lectures themselves were highly successful inasmuch as they provided not only formal instruction but also an opportunity for vigorous and stimulating debate. That last element could not be captured within the pages of a book I but the lectures concentrated on the latest advances in the field I which is why their essential contents are he re reproduced in collective form. Together they constitute an interdisciplinary status report of the field. The speakers brought many different viewpoints and a variety of back ground experiences io bear on the problems involved I but though language and conventions vary I the essential unity of the concerns is very clear I as indeed are the ultimate benefits of the many-sided approach.
Book Synopsis Annular Two-Phase Flow by : Geoffrey Hewitt
Download or read book Annular Two-Phase Flow written by Geoffrey Hewitt and published by Elsevier. This book was released on 2013-10-22 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annular Two-Phase Flow presents the wide range of industrial applications of annular two-phase flow regimes. This book discusses the fluid dynamics and heat transfer aspects of the flow pattern. Organized into 12 chapters, this book begins with an overview of the classification of the various types of interface distribution observed in practice. This text then examines the various regimes of two-phase flow with emphasis on the regions of occurrence of the annular flow regime. Other chapters consider the single momentum and energy balances, which illustrate the differences and analogies between single- and two-phase flows. This book discusses as well the simple modes for annular flow with consideration to the calculation of the profile of shear stress in the liquid film. The final chapter deals with the techniques that are developed for the measurement of flow pattern, entrainment, and film thickness. This book is a valuable resource for chemical engineers.
Book Synopsis A Dissertation on Liberty and Necessity, Pleasure and Pain by : BENJAMIN. FRANKLIN
Download or read book A Dissertation on Liberty and Necessity, Pleasure and Pain written by BENJAMIN. FRANKLIN and published by Gale Ecco, Print Editions. This book was released on 2018-04-22 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 18th century was a wealth of knowledge, exploration and rapidly growing technology and expanding record-keeping made possible by advances in the printing press. In its determination to preserve the century of revolution, Gale initiated a revolution of its own: digitization of epic proportions to preserve these invaluable works in the largest archive of its kind. Now for the first time these high-quality digital copies of original 18th century manuscripts are available in print, making them highly accessible to libraries, undergraduate students, and independent scholars. Western literary study flows out of eighteenth-century works by Alexander Pope, Daniel Defoe, Henry Fielding, Frances Burney, Denis Diderot, Johann Gottfried Herder, Johann Wolfgang von Goethe, and others. Experience the birth of the modern novel, or compare the development of language using dictionaries and grammar discourses. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to insure edition identification: ++++ British Library T126964 Anonymous. By Benjamin Franklin. Only 100 copies printed. London: printed in the year, 1725. 32p.; 8°
Book Synopsis Computational Heat Transfer by : Yogesh Jaluria
Download or read book Computational Heat Transfer written by Yogesh Jaluria and published by Routledge. This book was released on 2017-10-19 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition updated the material by expanding coverage of certain topics, adding new examples and problems, removing outdated material, and adding a computer disk, which will be included with each book. Professor Jaluria and Torrance have structured a text addressing both finite difference and finite element methods, comparing a number of applicable methods.
Book Synopsis My Kinsman, Major Molineux by : Nathaniel Hawthorne
Download or read book My Kinsman, Major Molineux written by Nathaniel Hawthorne and published by . This book was released on 2020-02-21 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this essay, the literary scholar Charles White investigates light as a symbol and as an imagery in Hawthorne's My Kinsman, Major Molineux. Such include the expansive use of the moonlight background in the introduction and the successive artificial sources of light...
Book Synopsis The Canon of Supreme Mystery by Yang Hsiung by : Michael Nylan
Download or read book The Canon of Supreme Mystery by Yang Hsiung written by Michael Nylan and published by State University of New York Press. This book was released on 2014-02-01 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a translation, with a commentary and a long contextualizing introduction, of the only major work of Han (206 B.C. to 220 A.D.) philosophy that is still available in complete form. It is the first translation of the work into a European language and provides unique access to this formative period in Chinese history. Because Yang Hsiung's interpretations drew upon a variety of pre-Han sources and then dominated Confucian learning until the twelfth century, this text is also a valuable resource on early Chinese history, philosophy, and culture beyond the Han period. The T'ai hsüan is also one of the world's great philosophic poems comparable in scale and grandeur to Lucretius' De rerum naturum. Nathan Sivin has written that this is one of the titles on the short list of Chinese books every cultivated person should read. Han thinkers saw in this text a compelling restatement of Confucian doctrine that addressed the major objections posed by rival schools including Mohism, Taoism, Legalism and Yin-Yang Five Phase Theory. Since this Han amalgam formed the basis for the state ideology of China from 134 B.C. to 1911, an ideology that in turn provided the intellectual foundations for the Japanese and Korean states, the importance of this book can hardly be overestimated.
