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An Investigation Of Unsteady Flow Behind A Circular Cylinder Using A Digital Piv Method
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Book Synopsis An Investigation of Unsteady Flow Behind a Circular Cylinder Using a Digital PIV Method by : J. Wu
Download or read book An Investigation of Unsteady Flow Behind a Circular Cylinder Using a Digital PIV Method written by J. Wu and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, a digital Particle Image Velocimetry (PIV) technique is described. The advantages of the technique in measuring velocity fields is illustrated by its applications to the measurement of the wake flow behind a circular cylinder. Single frame and multiply exposed digital particle images were acquired using a CCD camera. The velocity calculation is based on the digital Young's fringe pattern. Digital image enhancement techniques have been used to improve the quality of image signals. A data validation method which can detect and reject false dat points effectively has been developed. The near-wake instantaneous velocity distributions, with approximately 2000 points per frame, were collected for a Reynolds number ranging from 125 to 660 based on the cylinder diameter. Vorticity and circulations of shed vortices are presented. The plane normal to the classic vortex street was also measured; on this plane the footprint of embedded counter-rotating longitudinal vortex pairs are clearly evident.
Book Synopsis Multiphase Flow 1995 by : A. Serizawa
Download or read book Multiphase Flow 1995 written by A. Serizawa and published by Newnes. This book was released on 2012-12-02 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is increasing world-wide interest in obtaining an understanding of various multiphase flow phenomena and problems in terms of a common language of multiphase flow. This volume contains state-of-the-art papers which have been contributed from all over the world by experts working on all aspects of multiphase flows. The volume also highlights international technology-sharing in the fields of energy, environment and public health, in order to create a brighter and sustainable future for man and for all life in the next century. It is intended that this volume will serve as a major source of literature for the advancement of multiphase flow and allied fields.
Book Synopsis Analysis and Optimization of Unsteady Flow Past a Circular Cylinder Using a Harmonic Balance Method by : Emily Buckman Clark
Download or read book Analysis and Optimization of Unsteady Flow Past a Circular Cylinder Using a Harmonic Balance Method written by Emily Buckman Clark and published by . This book was released on 2013 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional laminar flow over a circular cylinder was investigated in this work. Three cases were considered in which the cylinder was either stationary, in constant rotation, or in periodic rotation. The purpose of this work was to investigate the effects of a rotating cylinder for lift enhancement, drag reduction, and the suppression of vortex shedding. The governing coupled nonlinear Navier-Stokes equations were solved using a finite difference discretization and Newton's method. In this way, three flow solvers were developed for this research: a steady solver, an unsteady time-accurate solver, and an unsteady harmonic balance solver. The force coefficients were of prime interest in this study. Favorable results were obtained using rotation as an active control for the flow over the cylinder. The cylinder in constant rotation resulted in lift enhancement, drag reduction and vortex suppression for increasing rotational speeds. Lift enhancement and drag reduction were also noted for a rotationally oscillating cylinder. The trade-offs for these goals were discussed. Lastly, a finite difference sensitivity analysis was performed for a rotationally oscillating cylinder with the harmonic balance solver. The mean drag coefficient was taken as the objective function, and the Strouhal number was the investigated design variable. The goal was to use the sensitivity analysis to determine a forcing frequency, which minimized the mean drag coefficient. Two iterative techniques were investigated, but neither converged to a minimum drag coefficient with the harmonic balance solver. It was determined that a minimum drag coefficient occurs near the boundary between the lock-on and non lock-on regions or in the non lock-on region, where the harmonic balance solver does not converge.
Book Synopsis Particle Image Velocimetry by : Andreas Schröder
Download or read book Particle Image Velocimetry written by Andreas Schröder and published by Springer Science & Business Media. This book was released on 2008-01-14 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the main results reached using the EC-funded network PivNet 2. It also presents a survey of the state of the art of scientific research using PIV techniques. You get a clear introduction to the basics of these techniques. The authors then guide you through current and possible future applications for flow analysis, including combustion and supersonic flow. Hundreds of illustrations, many in full color, are provided.
Book Synopsis 4th International Symposium on Fluid-Structure Interactions, Aeroelasticity, Flow-Induced Vibration and Noise by : M. P. Paidoussis
Download or read book 4th International Symposium on Fluid-Structure Interactions, Aeroelasticity, Flow-Induced Vibration and Noise written by M. P. Paidoussis and published by . This book was released on 1997 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Numerical Study of Unsteady Flows Past a Circular Cylinder by : Xuegeng Wang
Download or read book A Numerical Study of Unsteady Flows Past a Circular Cylinder written by Xuegeng Wang and published by . This book was released on 1989 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow Around Circular Cylinders by : M.M. Zdravkovich
Download or read book Flow Around Circular Cylinders written by M.M. Zdravkovich and published by Oxford University Press. This book was released on 1997 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text offers an authoritative compilation of experimental data, theoretical models, and computer simulations which will provide the reader with a comprehensive survey of research work on the phenomenon of flow around circular cylinders.
Book Synopsis Steady and Unsteady Flow Past a Circular Cylinder by : Siao Chung Luo
Download or read book Steady and Unsteady Flow Past a Circular Cylinder written by Siao Chung Luo and published by . This book was released on 1982 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Hydraulics of Advanced Nuclear Reactors by : Y. A. Hassan
Download or read book Thermal Hydraulics of Advanced Nuclear Reactors written by Y. A. Hassan and published by . This book was released on 1994 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Investigation on the Flow Around a Circular Cylinder in the First Critical Subregion by : Hyun Jin Kim
Download or read book An Experimental Investigation on the Flow Around a Circular Cylinder in the First Critical Subregion written by Hyun Jin Kim and published by . This book was released on 1986 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation has been carried out on the flow transitions around a smooth circular cylinder in the initial stage of the critical Reynolds number region, where drag coefficient starts to decrease. In this Reynolds number region, intermitent reattachment of the separated boundary layer was found, while only initial separation position excursion was observed in the subcritical region. Large spanwise variations in the surface pressure and wake velocity observed in the first critical subregion were associated with local wake width pulsations caused by spanwise phase variations in the unsteady flow reattachment.
Book Synopsis Investigation of Synthetic Jets Heat Transfer and Flow Field by : Carlo Salvatore Greco
Download or read book Investigation of Synthetic Jets Heat Transfer and Flow Field written by Carlo Salvatore Greco and published by Youcanprint. This book was released on 2015-04-30 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic jets are devices able to “synthetize” a jet from the ambient in which they are embedded through a simple membrane oscillation inside a cavity with an orifice. Such features make them high reliable, silent and easy to be miniaturized. For these reasons, they are widely investigated as electronic cooling devices. The present research is focused on the design and analysis of a different type of synthetic jet device compared to its single classical configuration. Such a device his experimentally characterized through the study of its free and impinging flow field and the evaluation of its heat transfer performance.
Book Synopsis Particle Image Velocimetry by : Markus Raffel
Download or read book Particle Image Velocimetry written by Markus Raffel and published by Springer Science & Business Media. This book was released on 2007-08-09 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This immensely practical guide to PIV provides a condensed, yet exhaustive guide to most of the information needed for experiments employing the technique. This second edition has updated chapters on the principles and extra information on microscopic, high-speed and three component measurements as well as a description of advanced evaluation techniques. What’s more, the huge increase in the range of possible applications has been taken into account as the chapter describing these applications of the PIV technique has been expanded.
Book Synopsis Unsteady Flow Phenomena in the Near Wake of a Circular Cylinder by : R. R. Chamberlain
Download or read book Unsteady Flow Phenomena in the Near Wake of a Circular Cylinder written by R. R. Chamberlain and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lecture Notes On Turbulence And Coherent Structures In Fluids, Plasmas And Nonlinear Media by : Horst Punzmann
Download or read book Lecture Notes On Turbulence And Coherent Structures In Fluids, Plasmas And Nonlinear Media written by Horst Punzmann and published by World Scientific. This book was released on 2006-11-29 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the lectures delivered at the 19th Canberra International Physics Summer School held at the Australian National University in Canberra (Australia) in January 2006.The problem of turbulence and coherent structures is of key importance in many fields of science and engineering. It is an area which is vigorously researched across a diverse range of disciplines such as theoretical physics, oceanography, atmospheric science, magnetically confined plasma, nonlinear optics, etc. Modern studies in turbulence and coherent structures are based on a variety of theoretical concepts, numerical simulation techniques and experimental methods, which cannot be reviewed effectively by a single expert.The main goal of these lecture notes is to introduce state-of-the-art turbulence research in a variety of approaches (theoretical, numerical simulations and experiments) and applications (fluids, plasmas, geophysics, nonlinear optical media) by several experts. A smooth introduction is presented to readers who are not familiar with the field, while reviewing the most recent advances in the area. This collection of lectures will provide a useful review for both postgraduate students and researchers new to the advancements in this field, as well as specialists seeking to expand their knowledge across different areas of turbulence research.
Book Synopsis Computational Unsteady Flow Dynamics by : David R. Gordon
Download or read book Computational Unsteady Flow Dynamics written by David R. Gordon and published by . This book was released on 1991 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transactions of the American Nuclear Society by : American Nuclear Society
Download or read book Transactions of the American Nuclear Society written by American Nuclear Society and published by . This book was released on 1958 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
