Flow Induced Vibrations Of Square And Rectangular Cylinders At Low Reynolds Number
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Flow Induced Vibrations Of Square And Rectangular Cylinders At Low Reynolds Number
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Author :
language : en
Publisher:
Release Date : 2015
Flow Induced Vibrations Of Square And Rectangular Cylinders At Low Reynolds Number written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Flow Induced Vibration
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Author : Robert D. Blevins
language : en
Publisher:
Release Date : 1977
Flow Induced Vibration written by Robert D. Blevins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Science categories.
Flow Induced Vibrations Of In Line Cylinder Arrangements At Low Reynolds Numbers
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Author : Kintak Raymond Yu
language : en
Publisher:
Release Date : 2014
Flow Induced Vibrations Of In Line Cylinder Arrangements At Low Reynolds Numbers written by Kintak Raymond Yu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Effect Of Flow Incidence And Reynolds Number On Low Speed Aerodynamic Characteristics Of Several Noncircular Cylinders With Applications To Directional Stability And Spinning
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Author : Edward Charles Polhamus
language : en
Publisher:
Release Date : 1959
Effect Of Flow Incidence And Reynolds Number On Low Speed Aerodynamic Characteristics Of Several Noncircular Cylinders With Applications To Directional Stability And Spinning written by Edward Charles Polhamus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Cylinders categories.
Flow Induced Vibration Of Circular Cylindrical Structures
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Author : Shoei-Sheng Chen
language : en
Publisher: Springer
Release Date : 1987-07-21
Flow Induced Vibration Of Circular Cylindrical Structures written by Shoei-Sheng Chen and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987-07-21 with Mathematics categories.
This book presents the vibration of circular cylinders in quiescent fluid, axial flow, and crossflow, and applications of the analytical methods and experimental data in design evaluation of various system components consisting of circular cylinders. It emphasizes analytical tools to predict structural vibration and experimental data for fluid forces and will help solve many important flow induced vibration problems in different industries. The techniques and results presented in this book will be useful not only to designers but also to researchers in this field. A comprehensive treatment of different situations is given in this book. For example, a thorough review of the analytical models and most recent development of fluidelastic instability of an array of cylinders in crossflow are presented in Chapter 10.
A Critical Review Of The Intrinsic Nature Of Vortex Induced Vibrations
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Author : Turgut Sarpkaya
language : en
Publisher:
Release Date : 2003
A Critical Review Of The Intrinsic Nature Of Vortex Induced Vibrations written by Turgut Sarpkaya and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Vibration categories.
This is a concise and comprehensive review of the progress made during the past two decades on vortex induced vibration (VIV) of mostly circular cylindrical structures subjected to steady uniform flow. The critical elements of the evolution of the ideas, theoretical insights, experimental methods, and numerical models are traced systematically; the strengths and weaknesses of the current state of the understanding of the complex fluid/structure interaction are discussed in some detail. Finally, some suggestions are made for further research on VIV. The organization of the paper is given at the end of the next section.
Flow Induced Vibration Of Circular And Square Cylinder With Low Mass And Damping
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Author : Jisheng Zhao
language : en
Publisher:
Release Date : 2012
Flow Induced Vibration Of Circular And Square Cylinder With Low Mass And Damping written by Jisheng Zhao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
This thesis investigates cross-flow flow-induced vibration of elastically mounted rigid circular and square cylinders with low mass and damping ratio over a range of low and vibration parameters. In particular, two typical body oscillator phenomena of flow-induced vibration, vortex-induced vibration and galloping, are studied experimentally. Thus, the study consists of two main parts. The first part, using simultaneous displacement, force and vorticity measurements, investigates the dynamic response of a circular cylinder undergoing transverse free vortex-induced vibrations and controlled trajectory-following vibrations. The second part characterises the amplitude and frequency responses of a square cylinder with angle of attack variation. Despite extensive work has been undertaken to understand the fundamental characteristics of free and forced vibrations of a circular cylinder, there are still a number of unresolved questions in the literature concerning the similarities and differences between the free and forced vibration cases. In order to directly compare these two vibration cases, a low-friction air-bearing rig and a real-time feedback control system were therefore designed and implemented in experiments. The major results obtained show that the transverse lift force and the decomposed vortex force experienced by a cylinder forced to follow the trajectory of free VIV are identical to the free vibration case, when both the total phase and the vortex phase relative to the body motion are constantly stable. However, significant differences between the two vibration cases are found at a reduced velocity located in the middle upper branch of VIV where largest-scale body vibration occur with complex switching phenomena in the total phase and the vortex phase. The results from the second part, flow-induced vibration of a square cylinder with angle of attack variation, show that the cylinder, as expected, experiences galloping at the zero angle of attack orientation (0 degree) and vortex-induced vibration at the diamond orientation (45 degree). As the angle of attack is varied from 45 degree to 0 degree, the body can undergo combinations of both vortex-induced vibration and galloping in a mixed response region. In this region, the oscillation amplitude response exhibits a new branch that exceeds the responses resulting from the two body-oscillator phenomena independently. For velocities above this resonant region, the body oscillation frequency splits into two diverging branches. Further, analysis of the amplitude reveals that the transition between galloping and vortex-induced vibrations occurs over a narrow range of angle of incidence. Despite the rich set of states found in the parameter space the vortex shedding modes remain very similar to those found previously in vortex-induced vibration.
Flow Induced Vibration Of Elastically Supported Rectangular Cylinders
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Author : Jeffrey L. Garrett
language : en
Publisher:
Release Date : 2003
Flow Induced Vibration Of Elastically Supported Rectangular Cylinders written by Jeffrey L. Garrett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Eight rectangular cylinders with aspect ratios that varied from 2 to 7 tested in the wind tunnel at zero degree incidence in a nearly turbulence-free flow field. The models were elastically suspended in the wind tunnel and constrained to a single degree of freedom, vertical motion transverse to the wind flow direction. Five tests were conducted for every aspect ratio, each with a different system mass. Side plates were utilized to minimize three-dimensional flow effects at the ends of the models and to maximum the two-dimensional flow field. Prior to testing each model, the following dynamic parameters were determined: natural frequency, mass, stiffness, damping, and Scruton number. Each test began with the model motionless. The wind speed was incrementally increased until vortex-induced transverse vibrations were observed. At each increment of wind speed where transverse vibrations were observed, the maximum amplitude of vibration and the wind speed were recorded. All models exhibited vortex-induced vibration lock-in during at least one wind regime. Five models exhibited vortex-induced vibration lock-in during two wind regimes. All models exhibited vortex-induced vibration lock-in at the critical reduced velocity predicted by the modified Strouhal number. Experimental results for each of the forty test cases include the reduced amplitudes and reduced velocities during lock-in, confirmation that lock-in can occur during more than one wind regime, and confirmation that the modified Strouhal number accurately predicts the reduced velocity when lock-in commences. The relation between the reduced amplitude and the mass/damping parameter was studied. As a result, a parameter for rectangular cylinders was derived as a function of the mass, damping, and geometry of the system. This parameter is analogous to the mass/damping parameter for circular cylinders, the Scruton number. Finally, a single response equation was developed that predicts the amplitude of vortex-induced vibration for a rectangular cylinders with aspect ratios from 2 to 7 utilizing the mass/damping/geometry parameter derived as part of this study.
Hydraulic And Civil Engineering Technology Vii
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Author : M. Yang
language : en
Publisher: IOS Press
Release Date : 2022-12-23
Hydraulic And Civil Engineering Technology Vii written by M. Yang and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-23 with Technology & Engineering categories.
Engineering technology is of crucial importance to the infrastructure on which modern societies depend, and keeping abreast of the latest research and developments in the field is of vital importance. This book presents the proceedings of HCET 2022, the 7th International Technical Conference on Frontiers of Hydraulic and Civil Engineering Technology, originally due to be held, in Sanya, China, from 25-27 September 2022, but instead held as a fully virtual event on Zoom due to continued uncertainty related to the Covid 19 pandemic. HCET is a platform for the dissemination of research results on the latest advances in the areas of hydraulic and civil engineering technology and environmental engineering, and provides an opportunity for scientists, researchers and engineers from around the world to exchange their findings, discuss developments, and possibly establish a basis for collaboration. A total of 275 submissions were received from international contributors, and all were subjected to a rigorous peer-review process, with each paper reviewed by a minimum of two experts. Papers were also checked for quality and plagiarism, after which, 163 papers were accepted for presentation and publication. Topics covered include the research and development of concrete structure design and analysis, structural mechanics and structural engineering, geological exploration and earthquake engineering, building technology, urban planning, energy, environment and advanced engineering science and applications. The book offers a state-of-the-art overview of recent developments, and will be of interest to all those working in the fields of hydraulic and civil engineering technology.
Flow Induced Vibrations
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Author :
language : en
Publisher:
Release Date : 1991
Flow Induced Vibrations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Fluid dynamics categories.