Vortex Induced Vibration Of Two And Three Dimensional Bodies
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Vortex Induced Vibration Of Two And Three Dimensional Bodies With Two Degrees Of Freedom
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Author : Nathan Isaiah Jauvits
language : en
Publisher:
Release Date : 2003
Vortex Induced Vibration Of Two And Three Dimensional Bodies With Two Degrees Of Freedom written by Nathan Isaiah Jauvits 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.
Vortex Induced Vibration Of Two And Three Dimensional Bodies
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Author : Raghuraman N. Govardhan
language : en
Publisher:
Release Date : 2000
Vortex Induced Vibration Of Two And Three Dimensional Bodies written by Raghuraman N. Govardhan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Structural dynamics categories.
Flow Induced Vibrations
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Author : Eduard Naudascher
language : en
Publisher: Courier Corporation
Release Date : 2012-03-27
Flow Induced Vibrations written by Eduard Naudascher and has been published by Courier Corporation this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-03-27 with Science categories.
Despite their variety, the vibration phenomena from many different engineering fields can be classified into a relatively few basic excitation mechanisms. The classification enables engineers to identify all possible sources of excitation in a given system and to assess potential dangers. This graduate-level text presents a synthesis of research results and practical experience from disparate fields in the form of engineering guidelines. It is particularly geared toward assessing the possible sources of excitation in a flow system, in identifying the actual danger spots, and in finding appropriate remedial measures or cures. Flow-induced vibrations are presented in terms of their basic elements: body oscillators, fluid oscillators, and sources of excitation. By stressing these basic elements, the authors provide a basis for the transfer of knowledge from one system to another, as well as from one engineering field to another. In this manner, well-known theories on cylinders in cross-flow or well-executed solutions from the field of wind engineering--to name just two examples--may be useful in other systems or fields on which information is scarce. The unified approach is broad enough to permit treatment of the major excitation mechanism, yet simple enough to be of practical use.
Modelling And Analysis Of Vortex Induced Vibrations Of Rigid And Flexible Cylinders
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Author : Hossein Zanganeh
language : en
Publisher:
Release Date : 2014
Modelling And Analysis Of Vortex Induced Vibrations Of Rigid And Flexible Cylinders written by Hossein Zanganeh 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.
Vortex-induced vibration (VIV) is a fundamental phenomenon commonly encountered in various practical engineering. Owing to the complexities associated with this phenomenon, modelling and prediction of VIV is a challenging task. In this research, a new predictive phenomenological model is developed for VIV of an elastically mounted rigid cylinder subjected to a fluid flow and free to vibrate in both cross-flow (CF) and in-line (IL) directions. The ensuing dynamical system is based on double Duffing-van der Pol (structural-wake) oscillators with the two structural equations containing both cubic and quadratic nonlinear terms. The cubic nonlinearities capture the geometrical coupling of CF/IL displacements excited by hydrodynamic lift/drag forces whereas the quadratic nonlinearities allow the fluid-structure interactions. The model predictions are extensively compared with published and in-house experimental results. Experiments are carried out at the Department's towing tank to calibrate and validate numerical prediction results. Comparisons illustrate the qualitative resemblance between experimental and prediction results, highlighting how the new model can capture several important VIV characteristics including a two-dimensional lock-in, jump and hysteresis phenomenon, and figure-of-eight trajectory tracing the periodically coupled CF/IL oscillations. Moreover, the parametric studies reveal the important effect of geometrical nonlinearities, mass ratio, damping ratio and natural frequency ratio. Insights into hydrodynamic properties such as VIV-induced mean drag, added mass and damping are drawn based on the newly proposed model via analytical-numerical approaches and comparisons with published literature. Consequently, the new prediction model is applied to the VIV analysis of flexible circular cylinders subjected to uniform and linearly sheared currents. To capture a three-dimensional aspect of the flexible cylinder experiencing VIV, nonlinear equations of CF, IL and axial structural oscillations are considered to be coupled with the distributed van der Pol wake-oscillators. Governing equations are numerically solved via a space-time finite difference scheme, and the obtained numerical results highlight several aspects of VIV of elastic cylinders along with the axial motion effects. Apart from the validation of the numerical model with published experimental results, this study reveals how the effect of axial motion and its nonlinear coupling with the two transverse CF/IL motions can be very important. These depend on the reduced velocity, the fluid-structure parameters, the single or multi-mode lock-in condition, and the standing-wave versus travelling-wave features.
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.
Mechanics Of Flow Induced Vibration
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Author : Rajeev Jaiman
language : en
Publisher: Springer Nature
Release Date : 2023-06-10
Mechanics Of Flow Induced Vibration written by Rajeev Jaiman and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-06-10 with Technology & Engineering categories.
This book discusses various passive and active techniques for controlling unsteady flow dynamics and associated coupled mechanics of fluid-structure interaction. Coupled multiphysics and multidomain simulations are emerging and challenging research areas, which have received significant attention during the past decade. One of the most common multiphysics and multidomain problems is fluid-structure interaction (FSI), i.e., the study of coupled physical systems involving fluid and a structure that have a mechanical influence on each other. Regardless of the application area, the investigation toward modeling of fluid-structure interaction and the underlying mechanisms in dealing with coupled fluid-structure instability with real-world applications remains a challenge to scientists and engineers. This book is designed for students and researchers who seek knowledge of computational modeling and control strategies for fluid-structure interaction. Specifically, this book provides a comprehensive review of the underlying unsteady physics and coupled mechanical aspects of the fluid-structure interaction of freely vibrating bluff bodies, the self-induced flapping of thin flexible structures, and aeroelasticity of shell structures. Understanding flow-induced loads and vibrations can lead to safer and cost-effective structures, especially for light and high-aspect ratio structures with increased flexibility and harsh environmental conditions. Using the body-fitted and moving mesh formulations, the physical insights associated with structure-to-fluid mass ratios, Reynolds number, nonlinear structural deformation, proximity interference, near-wall contacts, free-surface, and other interacting physical fields are covered in this book. In conjunction with the control techniques, data-driven model reduction approaches based on subspace projection and deep neural calculus are covered for low-dimensional modeling of unsteady fluid-structure interaction.
Vortex Induced Vibration On A Two Dimensional Circular Cylinder With Low Reynolds Number And Low Mass Damping Parameter
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Author :
language : en
Publisher:
Release Date : 2015
Vortex Induced Vibration On A Two Dimensional Circular Cylinder With Low Reynolds Number And Low Mass Damping Parameter 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.
Two Dimensional Numerical Study With Les Modeling Of Vortex Induced Vibration Of A Circular Cylinder Subjected To A Uniform Flow At A Moderate Reynolds Number
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Author : Helmi Nazmi Al-Jamal
language : en
Publisher:
Release Date : 2002
Two Dimensional Numerical Study With Les Modeling Of Vortex Induced Vibration Of A Circular Cylinder Subjected To A Uniform Flow At A Moderate Reynolds Number written by Helmi Nazmi Al-Jamal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Vibration categories.
Hydrodynamics Around Cylindrical Structures
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Author : Jorgen Fredsoe
language : en
Publisher: World Scientific
Release Date : 1997-03-17
Hydrodynamics Around Cylindrical Structures written by Jorgen Fredsoe and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-03-17 with categories.
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.
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.