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The Unsteady Flow Within A Spinning Cylinder
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Book Synopsis The Unsteady Flow Within a Spinning Cylinder by : E. H. Wedemeyer
Download or read book The Unsteady Flow Within a Spinning Cylinder written by E. H. Wedemeyer and published by . This book was released on 1963 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical analysis is given of the unsteady flow within a liquid- filled cylinder of finite length, which is started impulsively to spin about its axis. It is established that a secondary flow, which is caused by the cylinder ends, has a remarkable effect on the generation of spin in the liquid. The theoretical results are compared with experimental observations and good agreement is found.
Book Synopsis Oscillations of a Liquid in a Rotating Cylinder: Part 2. Spin-up by :
Download or read book Oscillations of a Liquid in a Rotating Cylinder: Part 2. Spin-up written by and published by . This book was released on 1983 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: The unsteady motion of a fluid which fills a cylindrical container in a spinning projectile is considered. The spin is imparted impulsively to the cylinder and spin-up of the fluid is the basic flow which is perturbed to study the waves in the rotating fluid. The core flow is perturbed, not the Ekman layer flow. This is called the spin-up eigenvalue problem which is solved with modal solutions. Viscous perturbations are needed because of the boundary layer and critical layer. A numerical method of solution is given and several results shown. There are two times at which projectile instability might occur. The results of the theory and method are validated by comparison with experimental results.
Book Synopsis Some Experiments with Liquid-filled, Impulsively Started, Spinning Cylinder by : Gene Sokol
Download or read book Some Experiments with Liquid-filled, Impulsively Started, Spinning Cylinder written by Gene Sokol and published by . This book was released on 1962 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Unsteady Incompressible Flow in a Partially-Filled Rotating Cylinder by : Michael J. Nusca
Download or read book Numerical Simulation of Unsteady Incompressible Flow in a Partially-Filled Rotating Cylinder written by Michael J. Nusca and published by . This book was released on 1988 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: The liquid flowfield in a full or partially-filled right circular cylinder in rapid axial rotation is investigated numerically. The governing equations ar the axisymmetric, unsteady, viscous, incompressible Navier-Stokes equations. These equations are written in stream function-vorticity form for a cylindrical coordinate system in a nonrotating reference frame. The governing equations are discretized using second-order finite-differences for time and space on a nonuniform grid employing logarithmic stretching in regions where high flow gradients are anticipated. Time dependent solutions for Reynolds numbers between 1,000 and 100,000 have been obtained using a Gauss-Seidel relaxation procedure. For partially filled cases the free surface is assumed to be cylindrical and located at a constant radius from the axis of spin. Numerical solutions for full cylinders are consistent with previous solutions and experimental data. Numerical solutions for a partially-filled cylinder are consistent with experimental data for a liquid centrifuge except at the free surface. Computations of the roll moment exerted on the cylinder by the contained liquid shows a smaller moment for the partially-filled compared with the full cylinder results. Keywords: Finite difference, Incompressible flow, Liquid filled projectile, Liquid moment, Unsteady flow, Rotating liquids. (MJM).
Book Synopsis Apparatus for Study of Fluid Motion in a Spinning Cylinder by : Harold M. Stoller
Download or read book Apparatus for Study of Fluid Motion in a Spinning Cylinder written by Harold M. Stoller and published by . This book was released on 1960 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASME 68-FE-13 written by H. Goller and published by . This book was released on 1968 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrodynamics Around Cylindrical Structures by : Jorgen Fredsoe
Download or read book Hydrodynamics Around Cylindrical Structures written by Jorgen Fredsoe and published by World Scientific. This book was released on 1997-03-17 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the subject of wave/current flow around a cylinder, the forces induced on the cylinder by the flow, and the vibration pattern of slender structures in a marine environment.The primary aim of the book is to describe the flow pattern and the resulting load which develops when waves or current meet a cylinder. Attention is paid to the special case of a circular cylinder. The development in the forces is related to the various flow patterns and is discussed in detail. Regular as well as irregular waves are considered, and special cases like wall proximities (pipelines) are also investigated.The book is intended for MSc students with some experience in basic fluid mechanics and for PhD students.
Book Synopsis An Experimental Study of Steady Flow in a Partially-filled Rotating Cylinder by : Richard Dulany Whiting
Download or read book An Experimental Study of Steady Flow in a Partially-filled Rotating Cylinder written by Richard Dulany Whiting and published by . This book was released on 1978 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrodynamics of Suspensions by : Marius Ungarish
Download or read book Hydrodynamics of Suspensions written by Marius Ungarish and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attention is focused on a suspension of buoyant particles (or droplets) in acontinuous fluid. In the presence of a force field, gravitational or centrifugal, and exposed to ordinary boundary constraints, a variety of fascinating flows can be obtained. These motions are essential ingre- dients in the widely used separation technology, where im- provedand new designs may be beneficial, but they are also interesting from a broader, academic point of view. In these respects, the recent investigations on these flows patterns, their underlying mechanisms and mathematical modeling - have accrued to a significant, relevant body of knowledge. The main objective of this book is to summarize - in a systematic, coherent and consistent fashion - the theoretical up to date contributions which seem fundamental in understanding, simulation and development of the subject.
Book Synopsis The Dynamics of Rotating Fluids by : P A Davidson
Download or read book The Dynamics of Rotating Fluids written by P A Davidson and published by Oxford University Press. This book was released on 2024-06-28 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook on rotating fluid dynamics combines a pedagogical development of theoretical ideas with a description and analysis of many of the fascinating examples of rotating flows found in nature. The book is self-contained, starting in Part I with introductory chapters on fluid dynamics and waves. The largest section of the book is Part II, where a broad theoretical framework is developed for rotating flows, including Ekman layers, inertial waves, Taylor columns, Rossby waves, precession, instabilities, rotating convection, vortex breakdown, and rotating turbulence. The book ends, in Part III, with an analysis of some naturally occurring rotating flows, including tornadoes and dust devils, tidal vortices, tropical cyclones, convection in planetary cores, zonal winds in planetary atmospheres, and astrophysical accretion discs. Davidson presents a unique combination of a deep but broad theoretical framework with a detailed discussion of many naturally occurring flows. Moreover, the book places great emphasis on the pedagogical development of theoretical ideas and the physical insight that brings.
Book Synopsis Mathematics Applied to Fluid Mechanics and Stability by : Donald A. Drew
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:
Book Synopsis Fundamentals of Two-Fluid Dynamics by : Daniel D. Joseph
Download or read book Fundamentals of Two-Fluid Dynamics written by Daniel D. Joseph and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-fluid dynamics is a challenging subject rich in physics and prac tical applications. Many of the most interesting problems are tied to the loss of stability which is realized in preferential positioning and shaping of the interface, so that interfacial stability is a major player in this drama. Typically, solutions of equations governing the dynamics of two fluids are not uniquely determined by the boundary data and different configurations of flow are compatible with the same data. This is one reason why stability studies are important; we need to know which of the possible solutions are stable to predict what might be observed. When we started our studies in the early 1980's, it was not at all evident that stability theory could actu ally work in the hostile environment of pervasive nonuniqueness. We were pleasantly surprised, even astounded, by the extent to which it does work. There are many simple solutions, called basic flows, which are never stable, but we may always compute growth rates and determine the wavelength and frequency of the unstable mode which grows the fastest. This proce dure appears to work well even in deeply nonlinear regimes where linear theory is not strictly valid, just as Lord Rayleigh showed long ago in his calculation of the size of drops resulting from capillary-induced pinch-off of an inviscid jet.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Granular Flow in an Inclined Rotating Cylinder by : Richard John Spurling
Download or read book Granular Flow in an Inclined Rotating Cylinder written by Richard John Spurling and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Ansys Fluent 2024 by : John E. Matsson
Download or read book An Introduction to Ansys Fluent 2024 written by John E. Matsson and published by SDC Publications. This book was released on with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: • Teaches new users how to run Computational Fluid Dynamics simulations using Ansys Fluent • Uses applied problems, with detailed step-by-step instructions • Designed to supplement undergraduate and graduate courses • Covers the use of Ansys Workbench, Ansys DesignModeler, Ansys Meshing, Ansys Fluent and Ansys Polyflow • Compares results from Ansys Fluent with numerical solutions using Mathematica • This edition features new chapters on a Spinning Propeller and a Pool Table Ball Simulation As an engineer, you may need to test how a design interacts with fluids. For example, you may need to simulate how air flows over an aircraft wing, how water flows through a filter, or how water seeps under a dam. Carrying out simulations is often a critical step in verifying that a design will be successful. In this hands-on book, you’ll learn in detail how to run Computational Fluid Dynamics (CFD) simulations using Ansys Fluent. Ansys Fluent is known for its power, simplicity and speed, which has helped make it a world leader in CFD software, both in academia and industry. Unlike any other Ansys Fluent textbook currently on the market, this book uses applied problems to walk you step-by-step through completing CFD simulations for many common flow cases, including internal and external flows, laminar and turbulent flows, steady and unsteady flows, and single-phase and multiphase flows. You will also learn how to visualize the computed flows in the post-processing phase using different types of plots. To better understand the mathematical models being applied, we’ll validate the results from Ansys Fluent with numerical solutions calculated using Mathematica. Throughout this book we’ll learn how to create geometry using Ansys Workbench and Ansys DesignModeler, how to create mesh using Ansys Meshing, how to use physical models and how to perform calculations using Ansys Fluent. The chapters in this book can be used in any order and are suitable for beginners with little or no previous experience using Ansys. Intermediate users, already familiar with the basics of Ansys Fluent, will still find new areas to explore and learn. An Introduction to Ansys Fluent 2024 is designed to be used as a supplement to undergraduate courses in Aerodynamics, Finite Element Methods and Fluid Mechanics and is suitable for graduate level courses such as Viscous Fluid Flows and Hydrodynamic Stability. The use of CFD simulation software is rapidly growing in all industries. Companies are now expecting graduating engineers to have knowledge of how to perform simulations. Even if you don’t eventually complete simulations yourself, understanding the process used to complete these simulations is necessary to be an effective team member. People with experience using Ansys Fluent are highly sought after in the industry, so learning this software will not only give you an advantage in your classes, but also when applying for jobs and in the workplace. This book is a valuable tool that will help you master Ansys Fluent and better understand the underlying theory. Topics Covered • 2D Axisymmetric Flow • 2D Axisymmetric Swirl • 3D Flow • Animation • Batch Job • Boundary Conditions • Cell Zone Conditions • CFD-Post • Compressible Flow • Contours • Drag and Lift • Dynamic Mesh Zones • Fault-tolerant Meshing • Fluent Launcher • Force-Report • Initialization • Iterations • Laminar and Turbulent Flows • Macroscopic Particle Model • Materials • Meshing • Multiphase Flows • Nodes and Elements • Pathlines • Polyflow • Post-Processing • Pressure • Project Schematic • Reference Values • Reports • Residuals • Results • Sketch • Solution • Solver • Streamlines • Supersonic Flow • Transient • User Defined Functions • Viscous Model • Visualizations • XY Plot • Watertight-Geometry
Download or read book Rotating Flow written by Peter Childs and published by Elsevier. This book was released on 2010-10-29 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotating flow is critically important across a wide range of scientific, engineering and product applications, providing design and modeling capability for diverse products such as jet engines, pumps and vacuum cleaners, as well as geophysical flows.Developed over the course of 20 years’ research into rotating fluids and associated heat transfer at the University of Sussex Thermo-Fluid Mechanics Research Centre (TFMRC), Rotating Flow is an indispensable reference and resource for all those working within the gas turbine and rotating machinery industries.Traditional fluid and flow dynamics titles offer the essential background but generally include very sparse coverage of rotating flows—which is where this book comes in. Beginning with an accessible introduction to rotating flow, recognized expert Peter Childs takes you through fundamental equations, vorticity and vortices, rotating disc flow, flow around rotating cylinders and flow in rotating cavities, with an introduction to atmospheric and oceanic circulations included to help deepen understanding.Whilst competing resources are weighed down with complex mathematics, this book focuses on the essential equations and provides full workings to take readers step-by-step through the theory so they can concentrate on the practical applications. A detailed yet accessible introduction to rotating flows, illustrating the differences between flows where rotation is significant and highlighting the non-intuitive nature of rotating flow fields Written by world-leading authority on rotating flow, Peter Childs, making this a unique and authoritative work Covers the essential theory behind engineering applications such as rotating discs, cylinders, and cavities, with natural phenomena such as atmospheric and oceanic flows used to explain underlying principles Provides a rigorous, fully worked mathematical account of rotating flows whilst also including numerous practical examples in daily life to highlight the relevance and prevalence of different flow types Concise summaries of the results of important research and lists of references included to direct readers to significant further resources
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781729333945 Total Pages :56 pages Book Rating :4.3/5 (339 download)
Book Synopsis Effect of Rotation Rate on the Forces of a Rotating Cylinder: Simulation and Control by : National Aeronautics and Space Adm Nasa
Download or read book Effect of Rotation Rate on the Forces of a Rotating Cylinder: Simulation and Control written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-27 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper we present numerical solutions to several optimal control problems for an unsteady viscous flow. The main thrust of this work is devoted to simulation and control of an unsteady flow generated by a circular cylinder undergoing rotary motion. By treating the rotation rate as a control variable, we can formulate two optimal control problems and use a central difference/pseudospectral transform method to numerically compute the optimal control rates. Several types of rotations are considered as potential controls, and we show that a proper synchronization of forcing frequency with the natural vortex shedding frequency can greatly influence the flow. The results here indicate that using moving boundary controls for such systems may provide a feasible mechanism for flow control. Burns, John A. and Ou, Yuh-Roung Unspecified Center...
