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Author : Mohammed Hussein Haytham Hamede
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book The Turbulent Very Wide-gap Taylor-Couette Flow written by Mohammed Hussein Haytham Hamede and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andreas Froitzheim
Publisher : Cuvillier Verlag
ISBN 13 : 3736960735
Total Pages : 172 pages
Book Rating : 4.7/5 (369 download)
Download or read book Angular momentum transport and pattern formation in medium- and wide-gap turbulent Taylor-Couette flow written by Andreas Froitzheim and published by Cuvillier Verlag. This book was released on 2019-08-26 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulent Taylor-Couette flow, where the fluid is confined by two coaxial and independently rotating cylinders, is experimentally investigated within this thesis for medium and wide gaps. To reveal the influence of flow patterns on the angular momentum transport, direct torque measurements, flow visualizations and particle image velocimetry are performed in two different facilities. For the largely unexplored radius ratio regime of η = 0.357, the directly measured torque features a transition as a function of shear, which is connected to the capacity of the outer cylinder to emit small-scale plumes. When the cylinders rotate slightly in counter-direction, a maximum in torque occurs at μmax = -0.123, which is induced by the formation of large-scale Taylor vortices. The contribution of these vortices to the overall momentum transport clearly exceeds the contribution of the turbulent fluctuations for η = 0.5. Furthermore, the large-scale Taylor rolls are driven by small-scale plumes and feature azimuthally traveling waves for η = 0.714. Accordingly, the angular momentum transport in medium and wide-gap turbulent Taylor-Couette flow is determined by the interaction of turbulence and flow patterns of different scales.
Author : C. David Andereck
Publisher : Springer Science & Business Media
ISBN 13 : 1461534380
Total Pages : 351 pages
Book Rating : 4.4/5 (615 download)
Download or read book Ordered and Turbulent Patterns in Taylor-Couette Flow written by C. David Andereck and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seldom does a physical system, particularly one as apparently simple as the flow of a Newtonian fluid between concentric rotating cylinders, retain the interest of scientists, applied mathematicians and engineers for very long. Yet, as this volume goes to press it has been nearly 70 years since G. I. Taylor's outstanding experimental and theoretical study of the linear stability of this flow was published, and a century since the first experiments were performed on rotating cylinder viscometers. Since then, the study of this system has progressed enormously, but new features of the flow patterns are still being uncovered. Interesting variations on the basic system abound. Connections with open flows are being made. More complex fluids are used in some experiments. The vigor of the research going on in this particular example of nonequilibrium systems was very apparent at the NATO Advanced Research Workshop on "Ordered and Turbulent Patterns in Taylor Couette Flow," held in Columbus, Ohio, USA May 22-24, 1991. A primary goal of this ARW was to bring together those interested in pattern formation in the classic Taylor Couette problem with those looking at variations on the basic system and with those interested in related systems, in order to better define the interesting areas for the future, the open questions, and the features common (and not common) to closed and open systems. This volume contains many of the contributions presented during the workshop.
Author : P. A. Davidson
Publisher : Cambridge University Press
ISBN 13 : 1107434343
Total Pages : 701 pages
Book Rating : 4.1/5 (74 download)
Download or read book Turbulence in Rotating, Stratified and Electrically Conducting Fluids written by P. A. Davidson and published by Cambridge University Press. This book was released on 2013-09-12 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are two recurring themes in astrophysical and geophysical fluid mechanics: waves and turbulence. This book investigates how turbulence responds to rotation, stratification or magnetic fields, identifying common themes, where they exist, as well as the essential differences which inevitably arise between different classes of flow. The discussion is developed from first principles, making the book suitable for graduate students as well as professional researchers. The author focuses first on the fundamentals and then progresses to such topics as the atmospheric boundary layer, turbulence in the upper atmosphere, turbulence in the core of the earth, zonal winds in the giant planets, turbulence within the interior of the sun, the solar wind, and turbulent flows in accretion discs. The book will appeal to engineers, geophysicists, astrophysicists and applied mathematicians who are interested in naturally occurring turbulent flows.
Author : Ronald J. Adrian
Publisher : Cambridge University Press
ISBN 13 : 0521440084
Total Pages : 585 pages
Book Rating : 4.5/5 (214 download)
Download or read book Particle Image Velocimetry written by Ronald J. Adrian and published by Cambridge University Press. This book was released on 2011 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle image velocimetry, or PIV, refers to a class of methods used in experimental fluid mechanics to determine instantaneous fields of the vector velocity by measuring the displacements of numerous fine particles that accurately follow the motion of the fluid. Although the concept of measuring particle displacements is simple in essence, the factors that need to be addressed to design and implement PIV systems that achieve reliable, accurate, and fast measurements and to interpret the results are surprisingly numerous. The aim of this book is to analyze and explain them comprehensively.
Author : Dennis Paulus Maria Gils
Publisher :
ISBN 13 : 9789036532723
Total Pages : 171 pages
Book Rating : 4.5/5 (327 download)
Download or read book Highly Turbulent Taylor-Couette Flow written by Dennis Paulus Maria Gils and published by . This book was released on 2011 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pascal Chossat
Publisher : Springer
ISBN 13 : 9780387941547
Total Pages : 234 pages
Book Rating : 4.9/5 (415 download)
Download or read book The Couette-Taylor Problem written by Pascal Chossat and published by Springer. This book was released on 1994-03-11 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. 1 A paradigm About one hundred years ago, Maurice Couette, a French physicist, de signed an apparatus consisting of two coaxial cylinders, the space between the cylinders being filled with a viscous fluid and the outer cylinder being rotated at angular velocity O2. The purpose of this experiment was, follow ing an idea of the Austrian physicist Max Margules, to deduce the viscosity of the fluid from measurements of the torque exerted by the fluid on the inner cylinder (the fluid is assumed to adhere to the walls of the cylinders). At least when O is not too large, the fluid flow is nearly laminar and 2 the method of Couette is valuable because the torque is then proportional to 110 , where II is the kinematic viscosity of the fluid. If, however, O is 2 2 increased to a very large value, the flow becomes eventually turbulent. A few years later, Arnulph Mallock designed a similar apparatus but allowed the inner cylinder to rotate with angular velocity 01, while O2 = o. The surprise was that the laminar flow, now known as the Couette flow, was not observable when 0 exceeded a certain "low" critical value Ole, even 1 though, as we shall see in Chapter II, it is a solution of the model equations for any values of 0 and O .
Author : Gretchen Baier
Publisher :
ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.:/5 (89 download)
Download or read book Liquid-liquid Extraction Based on a New Flow Pattern written by Gretchen Baier and published by . This book was released on 1999 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hua-Shu Dou
Publisher : Springer Nature
ISBN 13 : 9811900876
Total Pages : 503 pages
Book Rating : 4.8/5 (119 download)
Download or read book Origin of Turbulence written by Hua-Shu Dou and published by Springer Nature. This book was released on 2022-03-25 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the new discovery of the origin of turbulence from Navier–Stokes equations. The fully developed turbulence is found to be composed of singularities of flow field. The mechanisms of flow stability and turbulent transition are described using the energy gradient theory, which states all the flow instability and breakdown resulted from the gradient of the total mechanical energy normal to the flow direction. This approach is universal for flow instability in Newtonian flow and non-Newtonian flow. The theory has been used to solve several problems, such as plane and pipe Poiseuille flows, plane Couette flow, Taylor–Couette flow, flows in straight coaxial annulus, flows in curved pipes and ducts, thermal convection flow, viscoelastic flow, and magnet fluid flow, etc. The theory is in agreement with results from numerical simulations and experiments. The analytical method used in this book is novel and is different from the traditional approaches. This book includes the fundamental basics of flow stability and turbulent transition, the essentials of the energy gradient theory, and the applications of the theory to several practical problems. This book is suitable for researchers and graduate students.
Author : J. Thanh Van Tran
Publisher : Atlantica Séguier Frontières
ISBN 13 : 9782863321584
Total Pages : 368 pages
Book Rating : 4.3/5 (215 download)
Download or read book Chaos and Complexity written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1995 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hans J. Rath
Publisher : Springer Science & Business Media
ISBN 13 : 3642721575
Total Pages : 193 pages
Book Rating : 4.6/5 (427 download)
Download or read book Advances in Fluid Mechanics and Turbomachinery written by Hans J. Rath and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers in this volume are mostly in the area of computational fluid dynamics (CFD). Furthermore, to some extend this volume contains also contributions from the field of new experimental mehtods and diagnostics applied to fluid dynamics, combustions and turbomachniery. the contributed papers cover diverse topics such as pipe flows, shock tube flows, compressor flows as well as velocity and turbulence measurements of flow conditioners. There is also a survey article on recent flow computations on high performance computers. Articles are also devoted to liquid-liquid systems, rotating fluid flows and combustion diagnostics.
Author : Jochen Fröhlich
Publisher : Springer
ISBN 13 : 3319144480
Total Pages : 656 pages
Book Rating : 4.3/5 (191 download)
Download or read book Direct and Large-Eddy Simulation IX written by Jochen Fröhlich and published by Springer. This book was released on 2015-01-27 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reflects the state of the art of numerical simulation of transitional and turbulent flows and provides an active forum for discussion of recent developments in simulation techniques and understanding of flow physics. Following the tradition of earlier DLES workshops, these papers address numerous theoretical and physical aspects of transitional and turbulent flows. At an applied level it contributes to the solution of problems related to energy production, transportation, magneto-hydrodynamics and the environment. A special session is devoted to quality issues of LES. The ninth Workshop on 'Direct and Large-Eddy Simulation' (DLES-9) was held in Dresden, April 3-5, 2013, organized by the Institute of Fluid Mechanics at Technische Universität Dresden. This book is of interest to scientists and engineers, both at an early level in their career and at more senior levels.
Author : Ching Jen Chen
Publisher : CRC Press
ISBN 13 : 9780891165583
Total Pages : 884 pages
Book Rating : 4.1/5 (655 download)
Download or read book Turbulence Measurements and Flow Modeling written by Ching Jen Chen and published by CRC Press. This book was released on 1987 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. L. Koschmieder
Publisher : Cambridge University Press
ISBN 13 : 9780521402040
Total Pages : 356 pages
Book Rating : 4.4/5 (2 download)
Download or read book Bénard Cells and Taylor Vortices written by E. L. Koschmieder and published by Cambridge University Press. This book was released on 1993-02-26 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the motions resulting from heating a fluid layer from below.
Author : Christoph Egbers
Publisher : Springer
ISBN 13 : 3540455493
Total Pages : 446 pages
Book Rating : 4.5/5 (44 download)
Download or read book Physics of Rotating Fluids written by Christoph Egbers and published by Springer. This book was released on 2008-01-11 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to recent developments in the field of rotating fluids, in particular the study of Taylor--Couette flow, spherical Couette flow, planar Couette flow, as well as rotating annulus flow. Besides a comprehensive overview of the current state of the art, possible future directions in this research field are investigated. The first part of this volume presents several new results in the classical Taylor--Couette system covering diverse theoretical, experimental and numerical work on bifurcation theory, influence of boundary conditions, counter-rotating flows, spiral vortices and many others. The second part focuses on spherical Couette flows, including isothermal flows, thermal convective motion, as well as magnetohydrodynamics in spherical shells. The remaining parts are devoted to Goertler vortices, rotating annulus flows, as well as superfluid Couette flows. The present book will be of interest to all researchers and graduate students working actively in the field.
Author : Donald A. Drew
Publisher : SIAM
ISBN 13 : 9780898712087
Total Pages : 316 pages
Book Rating : 4.7/5 (12 download)
Download or read book Mathematics Applied to Fluid Mechanics and Stability written by Donald A. Drew and published by SIAM. This book was released on 1986-01-01 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hans Kuerten
Publisher : Springer Science & Business Media
ISBN 13 : 9400724829
Total Pages : 460 pages
Book Rating : 4.4/5 (7 download)
Download or read book Direct and Large-Eddy Simulation VIII written by Hans Kuerten and published by Springer Science & Business Media. This book was released on 2011-10-05 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume continues previous DLES proceedings books, presenting modern developments in turbulent flow research. It is comprehensive in its coverage of numerical and modeling techniques for fluid mechanics. After Surrey in 1994, Grenoble in 1996, Cambridge in 1999, Enschede in 2001, Munich in 2003, Poitiers in 2005, and Trieste in 2009, the 8th workshop, DLES8, was held in Eindhoven, The Netherlands, again under the auspices of ERCOFTAC. Following the spirit of the series, the goal of this workshop is to establish a state-of-the-art of DNS and LES techniques for the computation and modeling of transitional/turbulent flows covering a broad scope of topics such as aerodynamics, acoustics, combustion, multiphase flows, environment, geophysics and bio-medical applications. This gathering of specialists in the field was a unique opportunity for discussions about the more recent advances in the prediction, understanding and control of turbulent flows in academic or industrial situations.
