Convection naturelle tridimensionnelle autour d'un cône de révolution

Convection naturelle tridimensionnelle autour d'un cône de révolution

Author: Alidina Edouard

Publisher: Editions Universitaires Europeennes

Published: 2015-07-22

Total Pages: 228

ISBN-13: 9783841669261

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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."


Lake Pavin

Lake Pavin

Author: Télesphore Sime-Ngando

Publisher: Springer

Published: 2016-10-31

Total Pages: 422

ISBN-13: 3319399616

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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.


A Voyage Through Turbulence

A Voyage Through Turbulence

Author: Peter A. Davidson

Publisher: Cambridge University Press

Published: 2011-09-08

Total Pages: 451

ISBN-13: 1139502042

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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.


Active Subspaces

Active Subspaces

Author: Paul G. Constantine

Publisher: SIAM

Published: 2015-03-17

Total Pages: 105

ISBN-13: 1611973864

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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.


Basics of Fluid Mechanics and Introduction to Computational Fluid Dynamics

Basics of Fluid Mechanics and Introduction to Computational Fluid Dynamics

Author: Titus Petrila

Publisher: Springer Science & Business Media

Published: 2006-06-14

Total Pages: 513

ISBN-13: 0387238387

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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.


Measurement in Fluid Mechanics

Measurement in Fluid Mechanics

Author: Stavros Tavoularis

Publisher: Cambridge University Press

Published: 2005-10-24

Total Pages: 376

ISBN-13: 9780521815185

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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.


Basic Concepts for Simple and Complex Liquids

Basic Concepts for Simple and Complex Liquids

Author: Jean-Louis Barrat

Publisher: Cambridge University Press

Published: 2003-03-27

Total Pages: 410

ISBN-13: 9780521789530

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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.


Elementary Fluid Mechanics

Elementary Fluid Mechanics

Author: Tsutomu Kambe

Publisher: World Scientific

Published: 2007

Total Pages: 403

ISBN-13: 9812706674

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This textbook describes the fundamental OC physicalOCO aspects of fluid flows for beginners of fluid mechanics in physics, mathematics and engineering, from the point of view of modern physics. It also emphasizes the dynamical aspects of fluid motions rather than the static aspects, illustrating vortex motions, waves, geophysical flows, chaos and turbulence. Beginning with the fundamental concepts of the nature of flows and the properties of fluids, the book presents fundamental conservation equations of mass, momentum and energy, and the equations of motion for both inviscid and viscous fluids. In addition to the fundamentals, this book also covers water waves and sound waves, vortex motions, geophysical flows, nonlinear instability, chaos, and turbulence. Furthermore, it includes the chapters on superfluids and the gauge theory of fluid flows. The material in the book emerged from the lecture notes for an intensive course on Elementary Fluid Mechanics for both undergraduate and postgraduate students of theoretical physics given in 2003 and 2004 at the Nankai Institute of Mathematics (Tianjin) in China. Hence, each chapter may be presented separately as a single lecture."


European-Russian Space Cooperation

European-Russian Space Cooperation

Author: Brian Harvey

Publisher: Springer Nature

Published: 2021-04-10

Total Pages: 406

ISBN-13: 3030676862

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The story of European-Russian collaboration in space is little known and its importance all too often understated. Because France was the principal interlocutor between these nations, such cooperation did not receive the attention it deserved in English-language literature. This book rectifies that history, showing how Russia and Europe forged a successful partnership that has continued to the present day. Space writer Brian Harvey provides an in-depth picture of how this European-Russian relationship evolved and what factors—scientific, political and industrial—propelled it over the decades. The history begins in the cold war period with the first collaborative ventures between the Soviet Union and European countries, primarily France, followed later by Germany and other European countries. Next, the chapters turn to the missions when European astronauts flew to Russian space stations, the Soyuz rocket made a new home in European territory in the South American jungle and science missions were flown to study deep space. Their climax is the joint mission to explore Mars, called ExoMars, which has already sent a mission to Mars. Through this close examination of these European-Russian efforts, readers will appreciate an altogether new perspective on the history of space exploration, no longer defined by competition, but rather by collaboration and cooperation.