Download or read book VORTEX INDUCED VIBRATION OF STRUCTURES WITH BROKEN SYMMETRY written by Banafsheh Seyedaghazadeh and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A bluff body, i.e., an object with a blunt cross-section immersed in cross-flow forms an unstable wake, resulting in the formation of large-scale vortical structures, which induce unsteady forces on the body. If the body is flexible or flexibly mounted, vortex-induced vibration (VIV) results, which can have significant implications for a number of physical systems, from aeolian harps to power transmission lines, towing cables, undersea pipelines, drilling risers and mooring lines used to stabilize offshore floating platforms. VIV has been a major subject of research in recent years. The majority of these studies have focused on symmetric systems in which the structure, its geometry, its boundary conditions and the incoming flow are symmetric. However, in many real-world applications, VIV occurs in asymmetric systems. A flexibly-mounted vertical uniform circular cylinder which is placed in a uniform current is an example of a system with symmetric geometry, boundary conditions and wake. This geometry is usually considered as a canonical configuration in modeling structures undergoing VIV. However, many other configurations can exist in which the geometrical symmetry of the system is broken, such as an inclined cylinder in which the cylinder is placed with an angle with respect to the incoming flow direction, or a tapered cylinder in which the diameter of the circular cylinder varies along its length, or when the geometry of the cross-section changes from circular to other shapes such as square or triangle. Also, in some other cases, such as a circular cylinder which is forced to rotate about its long axis, the symmetry of the surrounding wake is broken by the rotation imposed on the cylinder. These cases among many examples are systems with broken symmetry, and are widely used in the offshore industry. The main objective of this thesis is to study VIV of systems with broken symmetry. For this purpose, experiments are conducted and the VIV response of the systems are studied in terms of amplitude and frequency of oscillations as well as the wake of the cylinder. It is shown that higher harmonics contributions of flow forces play an important role in VIV of structures. Also, various taper ratios in VIV of tapered cylinders are found to be the major parameters influencing the VIV response of tapered cylinders. Different rotation rates in VIV of a rotating cylinder, various angles of attack in VIV of a triangular cylinder and different angles of inclination in VIV of flexible inclined cylinder are found to be the influencing parameters in studying the VIV of structures with broken symmetry.
Download or read book Vortex induced Vibration of Cylindrical Structures written by Enhao Wang and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanics of Flow Induced Vibration written by Rajeev Jaiman and published by Springer Nature. This book was released on 2023-06-10 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book A Critical Review of the Intrinsic Nature of Vortex Induced Vibrations written by Turgut Sarpkaya and published by . This book was released on 2003 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Vortex Induced Vibrations of Structures written by Shawn Anthony Hall and published by . This book was released on 1981 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vortex Induced Vibration of Circular Cylindrical Structures written by Robert Blevins and published by . This book was released on 1972 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vortex induced Vibration of Moored Cylindrical Structures written by Brad Stappenbelt and published by . This book was released on 2006 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of the Vortex induced Vibrations in Off shore Structures written by Mohammed Abdulaziz and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book VORTEX INDUCED VIBRATIONS OF STRUCTURES written by SHAWN A. HALL and published by . This book was released on 1983 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Structural Dynamics and Damping written by Juan Carlos Jauregui and published by Springer. This book was released on 2019-03-14 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles recent research in the field of nonlinear dynamics, vibrations and damping applied to engineering structures. It addresses the modeling of nonlinear vibrations in beams, frames and complex mechanical systems, as well as the modeling of damping systems and viscoelastic materials applied to structural dynamics. The book includes several chapters related to solution techniques and signal analysis techniques. Last but not least, it deals with the identification of nonlinear responses applied to condition monitoring systems.
Download or read book Response of Vortex induced Vibration of Circular Structures Using Experimentally Derived Model Parameters written by Khandaker Z. Rahman and published by . This book was released on 2005 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variable Structure Control of Vortex induced Vibration written by Nagy M. Hussein and published by . This book was released on 1994 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book VIV of Slender Structures in Unsteady Flow written by Jung-Chi Liao and published by . This book was released on 2001 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The turning point problem wave propagation was solved for a pipe resting on a linearly varying stiffness foundation. Simple rules were established for conservative estimation of TDP fatigue damage with soil interactions. Guidelines for model test experiment design were provided based on dimensional analysis and scaling rules.
Download or read book Flow induced Vibration written by and published by . This book was released on 2003 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluid Structure Interactions written by Michael P. Païdoussis and published by Cambridge University Press. This book was released on 2014-01-02 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structures in contact with fluid flow, whether natural or man-made, are inevitably subject to flow-induced forces and flow-induced vibration: from plant leaves to traffic signs and to more substantial structures, such as bridge decks and heat exchanger tubes. Under certain conditions the vibration may be self-excited, and it is usually referred to as an instability. These instabilities and, more specifically, the conditions under which they arise are of great importance to designers and operators of the systems concerned because of the significant potential to cause damage in the short term. Such flow-induced instabilities are the subject of this book. In particular, the flow-induced instabilities treated in this book are associated with cross-flow, that is, flow normal to the long axis of the structure. The book treats a specific set of problems that are fundamentally and technologically important: galloping, vortex-shedding oscillations under lock-in conditions, and rain-and-wind-induced vibrations, among others. The emphasis throughout is on providing a physical description of the phenomena that is as clear and up-to-date as possible.
Download or read book Vortex induced Vibration of Two and Three dimensional Bodies written by Raghuraman N. Govardhan and published by . This book was released on 2000 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vortex induced Vibration of Two and Three dimensional Bodies with Two Degrees of Freedom written by Nathan Isaiah Jauvits and published by . This book was released on 2003 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
