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Experimental Investigation Of Instabilities In Newtonian And Viscioelastic Taylor Couette Flows
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Book Synopsis Experimental Investigation of Instabilities in Newtonian and Viscioelastic Taylor-Couette Flows by : James M. White
Download or read book Experimental Investigation of Instabilities in Newtonian and Viscioelastic Taylor-Couette Flows written by James M. White and published by . This book was released on 2002 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Theoretical and Experimental Investigation of Viscoelastic Instabilities in Taylor-Dean Flows by : Yong Lak Joo
Download or read book A Theoretical and Experimental Investigation of Viscoelastic Instabilities in Taylor-Dean Flows written by Yong Lak Joo and published by . This book was released on 1993 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigations Into the Transitions to Turbulence in Newtonian and Drag-reducing Polymeric Taylor-Couette Flows by : Cari Suzanne Dutcher
Download or read book Experimental Investigations Into the Transitions to Turbulence in Newtonian and Drag-reducing Polymeric Taylor-Couette Flows written by Cari Suzanne Dutcher and published by . This book was released on 2009 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Investigation on the Stability of Taylor-Couette Flow by : Gregory L. Tice
Download or read book An Experimental Investigation on the Stability of Taylor-Couette Flow written by Gregory L. Tice and published by . This book was released on 1981 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental and Theoretical Investigation of Purely Elastic Instabilities in Eccentric Cylinder Flows by : Irene Dris
Download or read book An Experimental and Theoretical Investigation of Purely Elastic Instabilities in Eccentric Cylinder Flows written by Irene Dris and published by . This book was released on 1996 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation of Taylor Instability Using Non-Newtonian Fluids by : C. S. Song
Download or read book Experimental Investigation of Taylor Instability Using Non-Newtonian Fluids written by C. S. Song and published by . This book was released on 1966 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The critical Taylor numbers for five different non-Newtonian solutions were determined experimentally by visual observation using the hydrogen bubble technique. Contrary to a finding by others, the present experiment indicates that the critical Taylor number is decreased as the concentration is increased. The shear on the outer cylinder due to rotation of the inner cylinder was also measured for an intermediate range of Reynolds number. Substantial reductions of frictional drag coefficient were achieved at higher additive concentrations when the comparison was based on equal Reynolds number. (Author).
Book Synopsis Ordered and Turbulent Patterns in Taylor-Couette Flow by : C. David Andereck
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.
Book Synopsis Handbook of Mathematical Fluid Dynamics by : S. Friedlander
Download or read book Handbook of Mathematical Fluid Dynamics written by S. Friedlander and published by Gulf Professional Publishing. This book was released on 2003-03-27 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Mathematical Fluid Dynamics is a compendium of essays that provides a survey of the major topics in the subject. Each article traces developments, surveys the results of the past decade, discusses the current state of knowledge and presents major future directions and open problems. Extensive bibliographic material is provided. The book is intended to be useful both to experts in the field and to mathematicians and other scientists who wish to learn about or begin research in mathematical fluid dynamics. The Handbook illuminates an exciting subject that involves rigorous mathematical theory applied to an important physical problem, namely the motion of fluids.
Book Synopsis Taylor-couette instability in viscoplastic fluid flow by :
Download or read book Taylor-couette instability in viscoplastic fluid flow written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A superposição de um escoamento circular de Couette e um fluxo com gradiente de pressão axial, através de um espaço anular ocorre em muitas aplicações práticas, tais como: reatores químicos catalíticos, filtros, extratores líquido-líquido, mancais e o fluxo de retorno de lamas de perfuração entre a coluna de perfuração rotatória e a formação rochosa na perfuração de poços produtores de petróleo e gás. As linhas de corrente curvadas do fluxo circular de Couette podem causar uma instabilidade centrífuga que produz vórtices toroidais, conhecidos como vórtices de Taylor. A presença destes vórtices muda as características hidrodinâmicas e a transferência de calor no processo. Em conseqüência, é muito importante ser capaz de prever o aparecimento da instabilidade. A maioria das análises numéricas e experimentais disponíveis na literatura são para fluidos Newtonianos e viscoelásticos (soluções polimericas). Neste trabalho, o efeito das propriedades viscoplásticas de suspensões de altas concentrações neste tipo de escoamento e nas condições críticas para o aparecimento de vórtices são determinadas teoricamente através da solução das equações de conservação. As equações diferenciais foram integradas pelo método de elementos finitos-Galerkin e o sistema de equações algébricas não lineares resultante foi resolvido pelo método de Newton.
Download or read book Journal of Rheology written by and published by . This book was released on 2004 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts from the Journal of the Society of Rheology, Japan.
Book Synopsis Numerical Methods for Energy Applications by : Naser Mahdavi Tabatabaei
Download or read book Numerical Methods for Energy Applications written by Naser Mahdavi Tabatabaei and published by Springer Nature. This book was released on 2021-03-22 with total page 1033 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough guide to the use of numerical methods in energy systems and applications. It presents methods for analysing engineering applications for energy systems, discussing finite difference, finite element, and other advanced numerical methods. Solutions to technical problems relating the application of these methods to energy systems are also thoroughly explored. Readers will discover diverse perspectives of the contributing authors and extensive discussions of issues including: • a wide variety of numerical methods concepts and related energy systems applications;• systems equations and optimization, partial differential equations, and finite difference method;• methods for solving nonlinear equations, special methods, and their mathematical implementation in multi-energy sources;• numerical investigations of electrochemical fields and devices; and• issues related to numerical approaches and optimal integration of energy consumption. This is a highly informative and carefully presented book, providing scientific and academic insight for readers with an interest in numerical methods and energy systems.
Book Synopsis Visualization of Viscoelastic Instabilities of Boger Fluids in Circular Couette Flow by : Brandon Max Baumert
Download or read book Visualization of Viscoelastic Instabilities of Boger Fluids in Circular Couette Flow written by Brandon Max Baumert and published by . This book was released on 1996 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Study of Taylor Instability Using Newtonian and Non-Newtonian Fluids by : Kenneth Keh-ya Chen
Download or read book Experimental Study of Taylor Instability Using Newtonian and Non-Newtonian Fluids written by Kenneth Keh-ya Chen and published by . This book was released on 1967 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Viscoelastic Effects on Free Surface Displacement Flows : a Computational and Experimental Study by : Alex Gwo-Kwei Lee
Download or read book Viscoelastic Effects on Free Surface Displacement Flows : a Computational and Experimental Study written by Alex Gwo-Kwei Lee and published by . This book was released on 2001 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Numerical and Experimental Investigation of Taylor Flow Instabilities in Narrow Gaps and Their Relationship to Turbulent Flow in Bearings by : Dingfeng Deng
Download or read book A Numerical and Experimental Investigation of Taylor Flow Instabilities in Narrow Gaps and Their Relationship to Turbulent Flow in Bearings written by Dingfeng Deng and published by . This book was released on 2007 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The relationship between the onset of Taylor instability and appearance of what is commonly known as 'turbulence' in narrow gaps between two cylinders is investigated. A question open to debate is whether the flow formations observed during Taylor instability regimes are, or are related to the actual 'turbulence' as it is presently modeled in micro-scale clearance flows. This question is approached by considering the viscous fluid in narrow gaps between two cylinders with various eccentricity ratios. The computational engine is provided by CFD-ACE, a commercial multi-physics software. The flow patterns, velocity profiles and torques on the outer cylinder are determined when the speed of the inner cylinder, clearance and eccentricity ratio are changed on a parametric basis. Calculations show that during the Taylor vortex regime velocity profiles in the radial direction are sinusoidal with pressure variations in the axial direction even for the case of the 'long journal bearing' (L/D>2). For the concentric case, both velocity and pressure profiles are axisymmetric and time-independent during the Taylor vortex regime. During the wavy vortex regime the radial velocities maintain their sinusoidal profiles, while pressure varies in both axial and circumferential directions. Both velocity and pressure profiles are non-axisymmetric and time-dependent. An order of magnitude analysis of the Navier-Stokes equation terms shows that the inertia, viscous, pressure and the Reynolds stress terms are equally significant during the transition regime (Taylor to wavy vortex regimes). Based on these findings, a new model for predicting the flow behavior in long and short journal bearing profiles are sinusoidal and depend on the local Reynolds number (or Taylor number) and the position in the axial direction. Unlike the modified turbulent viscocity of the most accepted models (Constantinescu, Ng-Pan, Hirs and Gross et al), the viscosity used in the new model is kept at its laminar value. A comparison is made between the results of this model and the four most accepted turbulence models mentioned above. Experimental torque measurements and flow visualization are performed for three kinds of oils with different viscosities. It is shown that in general there is a good agreement between the numerical and experimental torques except those in turbulent regime. The different flow patterns in the turbulent regime accounts for the different between the numerical and experimental torques. Comparison between numerical and experimental flow patterns is also made and it shows that they match well in the Couette, Taylor and Wavy regimes. There is a discrepancy between numerical and experimental flow patterns in Pre-wavy regime. The reason is that the vorticity is strong enough to destroy the organized Taylor vortices but it is not strong enough to hold the particles in the center areas of the vortices during experiments in this regime. In general there is a good agreement between the numerical and experimental results including torque measurements and flow pattersn. The new model for predicting the flow behavior in journal bearing films in the transition regime is justified."--Abstract.
Book Synopsis The Influence of External Modulation on the Stability of Azimuthal Taylor-Couette Flow by : Thomas Joseph Walsh
Download or read book The Influence of External Modulation on the Stability of Azimuthal Taylor-Couette Flow written by Thomas Joseph Walsh and published by . This book was released on 1988 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
