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Author: Alidina Edouard
Publisher: Editions Universitaires Europeennes
ISBN: 9783841669261
Category :
Languages : fr
Pages : 228
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Book Description
Ce travail est consacre a une etude numerique de la convection naturelle thermique, laminaire et permanente, developpee au voisinage d'un tronc de cone a paroi lisse. Les equations regissant ces transferts sont developpees dans le cadre de l'approximation de la couche limite laminaire. Dans cette etude, les auteurs resolvent numeriquement, a l'aide de la methode implicite aux differences finies, les equations de transfert, laminaires, tridimensionnelles, entre un cone de revolution isotherme incline, et un fluide newtonien en ecoulement vertical ascendant engendre par la convection naturelle. Les influences de l'angle d'inclinaison et celui de l'ouverture au sommet du cone sur les transferts sont analysees. Dans la couche limite, les resultats concernant les champs adimensionnels des vitesses et des temperatures ainsi que les nombres de Nusselt et les coefficients de frottement, sont representes graphiquement. Ce present manuscrit, contribuera a l'investigation des chercheurs, des etudiants, des techniciens et des ingenieurs specialistes sur le comportement thermique des fluides face a un corps incline."
Author: Alidina Edouard
Publisher: Editions Universitaires Europeennes
ISBN: 9783841669261
Category :
Languages : fr
Pages : 228
Get Book Here
Book Description
Ce travail est consacre a une etude numerique de la convection naturelle thermique, laminaire et permanente, developpee au voisinage d'un tronc de cone a paroi lisse. Les equations regissant ces transferts sont developpees dans le cadre de l'approximation de la couche limite laminaire. Dans cette etude, les auteurs resolvent numeriquement, a l'aide de la methode implicite aux differences finies, les equations de transfert, laminaires, tridimensionnelles, entre un cone de revolution isotherme incline, et un fluide newtonien en ecoulement vertical ascendant engendre par la convection naturelle. Les influences de l'angle d'inclinaison et celui de l'ouverture au sommet du cone sur les transferts sont analysees. Dans la couche limite, les resultats concernant les champs adimensionnels des vitesses et des temperatures ainsi que les nombres de Nusselt et les coefficients de frottement, sont representes graphiquement. Ce present manuscrit, contribuera a l'investigation des chercheurs, des etudiants, des techniciens et des ingenieurs specialistes sur le comportement thermique des fluides face a un corps incline."
Author: Dominique Blay
Publisher:
ISBN:
Category :
Languages : fr
Pages : 141
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Book Description
Author: Christian Deluche
Publisher:
ISBN:
Category :
Languages : fr
Pages : 114
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Book Description
Author: Télesphore Sime-Ngando
Publisher: Springer
ISBN: 9783319820026
Category : Science
Languages : en
Pages : 421
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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: Paul G. Constantine
Publisher: SIAM
ISBN: 1611973864
Category : Computers
Languages : en
Pages : 105
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Book Description
Scientists and engineers use computer simulations to study relationships between a model's input parameters and its outputs. However, thorough parameter studies are challenging, if not impossible, when the simulation is expensive and the model has several inputs. To enable studies in these instances, the engineer may attempt to reduce the dimension of the model's input parameter space. Active subspaces are an emerging set of dimension reduction tools that identify important directions in the parameter space. This book describes techniques for discovering a model's active subspace and proposes methods for exploiting the reduced dimension to enable otherwise infeasible parameter studies. Readers will find new ideas for dimension reduction, easy-to-implement algorithms, and several examples of active subspaces in action.
Author: Peter A. Davidson
Publisher: Cambridge University Press
ISBN: 1139502042
Category : Science
Languages : en
Pages : 451
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Book Description
Turbulence is widely recognized as one of the outstanding problems of the physical sciences, but it still remains only partially understood despite having attracted the sustained efforts of many leading scientists for well over a century. In A Voyage Through Turbulence we are transported through a crucial period of the history of the subject via biographies of twelve of its great personalities, starting with Osborne Reynolds and his pioneering work of the 1880s. This book will provide absorbing reading for every scientist, mathematician and engineer interested in the history and culture of turbulence, as background to the intense challenges that this universal phenomenon still presents.
Author: J.T. Beale
Publisher: Springer Science & Business Media
ISBN: 9401581371
Category : Technology & Engineering
Languages : en
Pages : 385
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Book Description
Many important phenomena in fluid motion are evident in vortex flow, i.e., flows in which vortical structures are significant in determining the whole flow. This book, which consists of lectures given at a NATO ARW held in Grenoble (France) in June 1992, provides an up-to-date account of current research in the study of these phenomena by means of numerical methods and mathematical modelling. Such methods include Eulerian methods (finite difference, spectral and wavelet methods) as well as Lagrangian methods (contour dynamics, vortex methods) and are used to study such topics as 2- or 3-dimensional turbulence, vorticity generation by solid bodies, shear layers and vortex sheets, and vortex reconnection. For researchers and graduate students in computational fluid dynamics, numerical analysis, and applied mathematics.
Author: Titus Petrila
Publisher: Springer Science & Business Media
ISBN: 0387238387
Category : Mathematics
Languages : en
Pages : 513
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Book Description
The present book – through the topics and the problems approach – aims at filling a gap, a real need in our literature concerning CFD (Computational Fluid Dynamics). Our presentation results from a large documentation and focuses on reviewing the present day most important numerical and computational methods in CFD. Many theoreticians and experts in the field have expressed their - terest in and need for such an enterprise. This was the motivation for carrying out our study and writing this book. It contains an important systematic collection of numerical working instruments in Fluid Dyn- ics. Our current approach to CFD started ten years ago when the Univ- sity of Paris XI suggested a collaboration in the field of spectral methods for fluid dynamics. Soon after – preeminently studying the numerical approaches to Navier–Stokes nonlinearities – we completed a number of research projects which we presented at the most important inter- tional conferences in the field, to gratifying appreciation. An important qualitative step in our work was provided by the dev- opment of a computational basis and by access to a number of expert softwares. This fact allowed us to generate effective working programs for most of the problems and examples presented in the book, an - pect which was not taken into account in most similar studies that have already appeared all over the world.
Author: Stavros Tavoularis
Publisher: Cambridge University Press
ISBN: 9780521815185
Category : Mathematics
Languages : en
Pages : 376
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Book Description
Measurement in Fluid Mechanics is an introductory, general reference in experimental fluid mechanics, featuring classical and state-of-the-art methods for flow visualization, flow rate measurement, pressure, velocity, temperature, concentration and wall shear stress. Suitable as a textbook for graduate and advanced undergraduate courses, and for practising engineers and applied scientists.
Author: Jean-Louis Barrat
Publisher: Cambridge University Press
ISBN: 9780521789530
Category : Science
Languages : en
Pages : 410
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Book Description
Presenting a unified approach, this book focusses on the concepts and theoretical methods that are necessary for an understanding of the physics and chemistry of the fluid state. The authors do not attempt to cover the whole field in an encyclopedic manner. Instead, important ideas are presented in a concise and rigorous style, and illustrated with examples from both simple molecular liquids and more complex soft condensed matter systems such as polymers, colloids, and liquid crystals.
