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Author: HONORE.. ANNDOH-YOBOUET
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Category :
Languages : fr
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L'UN DES PROCEDES DE REFROIDISSEMENT DES PAROIS DE CHAMBRES DE COMBUSTION, LORSQUE CELLES-CI SONT POREUSES, CONSISTE A LES REFROIDIR PAR EFFUSION D'UN GAZ FROID S'ECOULANT DE L'EXTERIEUR VERS L'INTERIEUR. LE TRAVAIL CONSISTE A ANALYSER L'EFFICACITE D'UN TEL SYSTEME. UN MODELE D'ECOULEMENT A TRAVERS LA PAROI, BASE SUR UNE LOI DE TYPE BLASIUS ET RESOLU SELON LA METHODE DES DIFFERENCES FINIES, A ETE ELABORE. COMPARE A DIVERS MODELES DE LA LITTERATURE, IL A ETE VALIDE PAR DES EXPERIENCES DIVERSIFIEES QUANT A LA NATURE DU FLUIDE ET AUX CONDITIONS DE TEMPERATURE ET DE PRESSION. LE MODELE DE TRANSFERTS THERMIQUES A L'INTERIEUR DE LA PAROI UTILISE L'EQUATION DE L'ENERGIE ET UNE METHODE DE RESOLUTION AUX DIFFERENCES FINIES. IL PERMET D'ETUDIER LA SENSIBILITE DU PHENOMENE AUX DIVERS PARAMETRES. L'UN D'EUX, LE COEFFICIENT D'ECHANGE CONVECTIF INTERNE EST PREPONDERANT. SA VALEUR EST OBTENUE PAR DES CORRELATIONS SEMI-EMPIRIQUES ISSUES DE LA BIBLIOGRAPHIE OU PAR UNE METHODE EXPERIMENTALE INDIRECTE DELICATE A MENER DU FAIT DES PUISSANCES THERMIQUES IMPORTANTES A METTRE EN JEU. UNE MODELISATION SIMPLE DE LA COUCHE LIMITE, UTILISANT L'HYPOTHESE D'UNE COUCHE LAMINAIRE EN DEPLACEMENT PERPENDICULAIRE A LA PAROI, PERMET DE CALCULER LE FLUX THERMIQUE RECU A LA PAROI. UNE EPAISSEUR DE COUCHE LIMITE DE QUELQUES CENTIEMES DE MILLIMETRES SUFFIT A LIMITER CONSIDERABLEMENT LE FLUX. UN PROGRAMME DE CALCUL GLOBAL EST EXPLOITE POUR ANALYSER L'EFFICACITE DU MODELE DE REFROIDISSEMENT ETUDIE LORSQU'ON FAIT VARIER LES PARAMETRES ESSENTIELS: PRESSIONS AMONT ET AVAL DE LA PAROI, TEMPERATURES DES FLUIDES CHAUD ET FROID, NATURE DU MATERIAU, NATURE DU FLUIDE, COEFFICIENT DE CONVECTION INTERNE ET EPAISSEUR DE LA COUCHE LIMITE
Author: HONORE.. ANNDOH-YOBOUET
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
L'UN DES PROCEDES DE REFROIDISSEMENT DES PAROIS DE CHAMBRES DE COMBUSTION, LORSQUE CELLES-CI SONT POREUSES, CONSISTE A LES REFROIDIR PAR EFFUSION D'UN GAZ FROID S'ECOULANT DE L'EXTERIEUR VERS L'INTERIEUR. LE TRAVAIL CONSISTE A ANALYSER L'EFFICACITE D'UN TEL SYSTEME. UN MODELE D'ECOULEMENT A TRAVERS LA PAROI, BASE SUR UNE LOI DE TYPE BLASIUS ET RESOLU SELON LA METHODE DES DIFFERENCES FINIES, A ETE ELABORE. COMPARE A DIVERS MODELES DE LA LITTERATURE, IL A ETE VALIDE PAR DES EXPERIENCES DIVERSIFIEES QUANT A LA NATURE DU FLUIDE ET AUX CONDITIONS DE TEMPERATURE ET DE PRESSION. LE MODELE DE TRANSFERTS THERMIQUES A L'INTERIEUR DE LA PAROI UTILISE L'EQUATION DE L'ENERGIE ET UNE METHODE DE RESOLUTION AUX DIFFERENCES FINIES. IL PERMET D'ETUDIER LA SENSIBILITE DU PHENOMENE AUX DIVERS PARAMETRES. L'UN D'EUX, LE COEFFICIENT D'ECHANGE CONVECTIF INTERNE EST PREPONDERANT. SA VALEUR EST OBTENUE PAR DES CORRELATIONS SEMI-EMPIRIQUES ISSUES DE LA BIBLIOGRAPHIE OU PAR UNE METHODE EXPERIMENTALE INDIRECTE DELICATE A MENER DU FAIT DES PUISSANCES THERMIQUES IMPORTANTES A METTRE EN JEU. UNE MODELISATION SIMPLE DE LA COUCHE LIMITE, UTILISANT L'HYPOTHESE D'UNE COUCHE LAMINAIRE EN DEPLACEMENT PERPENDICULAIRE A LA PAROI, PERMET DE CALCULER LE FLUX THERMIQUE RECU A LA PAROI. UNE EPAISSEUR DE COUCHE LIMITE DE QUELQUES CENTIEMES DE MILLIMETRES SUFFIT A LIMITER CONSIDERABLEMENT LE FLUX. UN PROGRAMME DE CALCUL GLOBAL EST EXPLOITE POUR ANALYSER L'EFFICACITE DU MODELE DE REFROIDISSEMENT ETUDIE LORSQU'ON FAIT VARIER LES PARAMETRES ESSENTIELS: PRESSIONS AMONT ET AVAL DE LA PAROI, TEMPERATURES DES FLUIDES CHAUD ET FROID, NATURE DU MATERIAU, NATURE DU FLUIDE, COEFFICIENT DE CONVECTION INTERNE ET EPAISSEUR DE LA COUCHE LIMITE
Author:
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Category : Research
Languages : en
Pages : 744
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Author:
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ISBN:
Category : Heat
Languages : en
Pages : 648
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Author: Trong T. Bui
Publisher:
ISBN:
Category : Parallel computers
Languages : en
Pages : 28
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Author: S. C. Bhatia
Publisher:
ISBN: 9788123908274
Category :
Languages : en
Pages :
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Author: Geoff Hewitt
Publisher: Cambridge University Press
ISBN: 9780521838993
Category : Mathematics
Languages : en
Pages : 366
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Book Description
The prediction of turbulent flows is of paramount importance in the development of complex engineering systems involving flow, heat and mass transfer, and chemical reactions. Arising from a programme held at the Isaac Newton Institute in Cambridge, this volume reviews the current situation regarding the prediction of such flows through the use of modern computational fluid dynamics techniques, and attempts to address the inherent problem of modelling turbulence. In particular, the current physical understanding of such flows is summarised and the resulting implications for simulation discussed. The volume continues by surveying current approximation methods whilst discussing their applicability to industrial problems. This major work concludes by providing a specific set of guidelines for selecting the most appropriate model for a given problem. Unique in its breadth and critical approach, this book will be of immense value to experienced practitioners and researchers, continuing the UK's strong tradition in fluid dynamics.
Author: Geoffrey Hewitt
Publisher: Elsevier
ISBN: 1483285235
Category : Technology & Engineering
Languages : en
Pages : 327
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Book Description
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.
Author: Catherine Barnard
Publisher: Bloomsbury Publishing
ISBN: 184731869X
Category : Law
Languages : en
Pages : 337
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Book Description
The Cambridge Yearbook of European Legal Studies provides a forum for the scrutiny of significant issues in EU Law, the law of the European Convention on Human Rights, and Comparative Law with a 'European' dimension, and particularly those issues which have come to the fore during the year preceding publication. The contributions appearing in the collection are commissioned by the Centre for European Legal Studies (CELS) Cambridge, a research centre in the Law Faculty of the University of Cambridge specialising in European legal issues. The papers presented are at the cutting edge of the fields which they address, and reflect the views of recognised experts drawn from the University world, legal practice, and the institutions of both the EU and its Member States. Inclusion of the comparative dimension brings a fresh perspective to the study of European law, and highlights the effects of globalisation of the law more generally, and the resulting cross fertilisation of norms and ideas that has occurred among previously sovereign and separate legal orders. The Cambridge Yearbook of European Legal Studies is an invaluable resource for those wishing to keep pace with legal developments in the fast moving world of European integration. INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 13 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/cyels/subs Editorial Advisory Board: Albertina Albors-Llorens, John Bell, Alan Dashwood, Simon Deakin, David Feldman, Richard Fentiman, Angus Johnston, John Spencer Founding Editors: Alan Dashwood and Angela Ward Ius Commune Prize 2012 Alexandre Saydé wrote Chapter 15 in this volume entitled: 'One Law, Two Competitions: An Enquiry into the Contradictions of Free Movement Law' and we are delighted to announce that he has been awarded the Ius Commune Prize 2012.
Author: Yogesh Jaluria
Publisher: Routledge
ISBN: 1351458868
Category : Science
Languages : en
Pages : 568
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Book Description
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.
Author: John E Tedstrom
Publisher: Routledge
ISBN: 9780367303211
Category :
Languages : en
Pages : 239
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Book Description
This book highlights that Soviet economic planners and politicians must come to recognize the need to make fundamental changes, not simply incremental refinements, in the failing Soviet system. It examines the dynamics of the process of perestroika and the complexity of individual economic issues.
