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Linearised Analysis Of Forced Wake Behind A Circular Cylinder
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Book Synopsis Linearised Analysis of Forced Wake Behind a Circular Cylinder by : Liang Lu
Download or read book Linearised Analysis of Forced Wake Behind a Circular Cylinder written by Liang Lu and published by . This book was released on 2012 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this thesis is to investigate the effect of external forcing on the wake of a circular cylinder by solving the linearised Navier-Stokes equations. The examined forcing conditions are external flow pulsation and forced cylinder oscillation. The perturbation fields induced by the forcing are calculated, and the non-linear effect of external flow pulsation on the linear stability of time-averaged cylinder wake is examined. -- The linearised Navier-Stokes equations based on either steady or time-averaged base flow fields are presented and the analytic solutions of the linearised flow system without or with external forcing are derived. Two numerical methodologies to extract the perturbation fields excited by external forcing are developed. -- The effect of external sinusoidal flow pulsation on the wake of a circular cylinder IS investigated by using a linearised analysis method. Cylinder wakes at several Reynolds numbers are examined. Steady wake is used as the base flow field for Reynolds number smaller than the critical one and time-averaged wake is used as the base flow field for higher Reynolds numbers. The perturbation fields excited by external pulsation are used for further analysis, for example, to evaluate terms in the perturbation energy equation and to predict the forces acting on the cylinder. -- The non-linear effect of external flow pulsation on the linear stability of cylinder wake is investigated. The linearised N-S solver is coupled with ARPACK to produce an eigensolver suitable for the global linear stability analysis of the cylinder wake. The base flow fields are the time-averaged wakes at Re = 200 with different external pulsation conditions. The characteristics of the time-averaged cylinder wakes at lock-on and non-lock-on regimes are compared.
Book Synopsis Development of the Wake Behind a Circular Cylinder Impulsively Started Into Rotatory and Rectilinear Motion: Intermediate Rotation Rates by : Institute for Computer Applications in Science and Engineering
Download or read book Development of the Wake Behind a Circular Cylinder Impulsively Started Into Rotatory and Rectilinear Motion: Intermediate Rotation Rates written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1991 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow-induced Vibration by : Robert D. Blevins
Download or read book Flow-induced Vibration written by Robert D. Blevins and published by . This book was released on 2001-01-01 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on applications for offshore platforms and piping; and, wind-induced vibration of buildings, bridges, and towers. This title also focuses on acoustic and mechanical vibration of heat exchangers, power lines, and process ducting.
Book Synopsis A Numerical Investigation of the Near Wake Structure in the Forced Oscillation of a Circular Cylinder by : Sampath K. Atluri
Download or read book A Numerical Investigation of the Near Wake Structure in the Forced Oscillation of a Circular Cylinder written by Sampath K. Atluri and published by . This book was released on 2004 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Numerical Investigation of the Near Wake Structure in the Variable Frequency Forced Oscillation of a Circular Cylinder by : Vijayendra K. Rao
Download or read book A Numerical Investigation of the Near Wake Structure in the Variable Frequency Forced Oscillation of a Circular Cylinder written by Vijayendra K. Rao and published by . This book was released on 2005 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lattice Boltzmann Modeling by : Michael C. Sukop
Download or read book Lattice Boltzmann Modeling written by Michael C. Sukop and published by Springer Science & Business Media. This book was released on 2007-04-05 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is a basic introduction to Lattice Boltzmann models that emphasizes intuition and simplistic conceptualization of processes, while avoiding the complex mathematics that underlies LB models. The model is viewed from a particle perspective where collisions, streaming, and particle-particle/particle-surface interactions constitute the entire conceptual framework. Beginners and those whose interest is in model application over detailed mathematics will find this a powerful 'quick start' guide. Example simulations, exercises, and computer codes are included.
Book Synopsis Wake Dynamics in Flow Past an Oscillating Cylinder by : Hugh M. Blackburn
Download or read book Wake Dynamics in Flow Past an Oscillating Cylinder written by Hugh M. Blackburn and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of coupling between the flow in the wake of a circular cylinder and cylinder motion has important applications in structural, offshore and thermal power engineering. For lightly-damped structural elements, comparatively large-amplitude cylinder oscillations (order of two diameters peak-to-peak;) may result when the frequency of vortex shedding coalesces with one of the natural frequencies of the structure. This in turn can lead to a large reduction in the fatigue life of the structure or alternatively produce motion-related serviceability problems. A significant feature of the cylinder-wake interaction appears to be the presence of vortex couples in the near wake, of either skew- symmetric or asymmetric nature [1]. In order to examine the physics of the problem, we have taken a direct numerical simulation approach, in which the Navier-Stokes equations are solved in an accelerating reference frame attached to the cylinder [3]. Spatial discretization has been carried out using a non-conforming spectral element method [4,6]; time advancement was carried out using a second order time-splitting scheme [7]. As an adjunct to future studies in vortex-induced vibration, timeseries of lift and drag coefficients are presented, based on two-dimensional studies of forced cross-flow oscillation at Re-500. These are complemented by an examination of wake modes, using contours of vorticity. We use correlations between lift forces and cylinder cross-flow velocities and acceleration to assess the phase angle between lift force and cylinder motion, which in turn indicates the sign of mechanical power transfer between the fluid and the cylinder.
Book Synopsis Collection of nine Turkish manustripts by :
Download or read book Collection of nine Turkish manustripts written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bluff-Body Wakes, Dynamics and Instabilities by : Helmut Eckelmann
Download or read book Bluff-Body Wakes, Dynamics and Instabilities written by Helmut Eckelmann and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bluff-body wakes play an important role in many fluid dynamics problems and engineering applications. This book gives and up-to-date account of recent results obtained in the study of bluff-body wakes. Experimental, theoretical and numerical approaches are all comprehensively covered and compared. Topics of particular interest include hydrodynamic instability analyses, three-dimensional pattern formation problems, flow control methods, bifurcation analyses, numerical simulations and turbulence modelling. The main originality of thisvolume is that recent conceptual advances made to describe nonlinear phenomena in general are put to the test on a classical problem in fundamental fluid mechanics, namely the wake structure generated behind a bluff object.
Book Synopsis Mechanics of Wave-induced Forces on Cylinders by : T. L. Shaw
Download or read book Mechanics of Wave-induced Forces on Cylinders written by T. L. Shaw and published by Pitman Publishing. This book was released on 1979 with total page 774 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 1974 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Measurements in the Wake Behind a Circular Cylinder by : D.M. Passchier
Download or read book Some Measurements in the Wake Behind a Circular Cylinder written by D.M. Passchier and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transport Phenomena in Food Processing by : Jorge Welti-Chanes
Download or read book Transport Phenomena in Food Processing written by Jorge Welti-Chanes and published by CRC Press. This book was released on 2016-04-19 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specifically developed for food engineers, this is an in-depth reference book that focuses on transport phenomena in food preservation. First it reviews the fundamental concepts regarding momentum, heat, and mass transfer. Then the book examines specific applications of these concepts into a variety of traditional and novel processes and products.
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.
Download or read book Naval Research Reviews written by and published by . This book was released on 1968 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectral/hp Element Methods for Computational Fluid Dynamics by : George Karniadakis
Download or read book Spectral/hp Element Methods for Computational Fluid Dynamics written by George Karniadakis and published by American Chemical Society. This book was released on 2013-01-10 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Revision of: Spectral/hp element methods for CFD. 1999.
Book Synopsis Hydraulic Research in the United States 1970 by : United States. National Bureau of Standards
Download or read book Hydraulic Research in the United States 1970 written by United States. National Bureau of Standards and published by . This book was released on 1971 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
