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Aeroelasticity And Fluid Structure Interaction Problems
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Book Synopsis Aeroelasticity and Fluid Structure Interaction Problems by : Jim C. I. Chang
Download or read book Aeroelasticity and Fluid Structure Interaction Problems written by Jim C. I. Chang and published by . This book was released on 1994 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeroelasticity and Fluid Structure Interaction Problems by : Peretz Friedmann
Download or read book Aeroelasticity and Fluid Structure Interaction Problems written by Peretz Friedmann and published by . This book was released on 1994 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluid Structure Interaction VII by : C. A. Brebbia
Download or read book Fluid Structure Interaction VII written by C. A. Brebbia and published by WIT Press. This book was released on 2013 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Containing papers presented at the Seventh International Conference on the topic, this book covers new developments in fluid structure interaction problems. First organised in 2001, the conference includes contributions from international experts on a variety of topics, including: Structure response to severe shock and blast; Hydrodynamic forces; Aeroelasticity; Computational methods; Flow induced vibrations; Experimental studies and validation; Bioengineering applications; Offshore structures; Soil structure interaction.
Book Synopsis Principles of Aeroelasticity by : Rama B. Bhat
Download or read book Principles of Aeroelasticity written by Rama B. Bhat and published by . This book was released on 2016 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluid-structure Interaction by : Alain Dervieux
Download or read book Fluid-structure Interaction written by Alain Dervieux and published by Elsevier Science & Technology. This book was released on 2003 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This primarily theoretical study of mathematical and numerical models for fluid-structure interaction concerns systems involving fluid and structure that have mechanical influence on each other, with particular focus on unsteady aeroelasticity.
Book Synopsis Principles of Aeroelasticity by : Rama B. Bhat
Download or read book Principles of Aeroelasticity written by Rama B. Bhat and published by CRC Press. This book was released on 2018-09-03 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory Guide on the Design of Aerospace Structures Developed from a course taught at Concordia University for more than 20 years, Principles of Aeroelasticity utilizes the author’s extensive teaching experience to immerse undergraduate and first-year graduate students into this very specialized subject. Ideal for coursework or self-study, this detailed examination introduces the concepts of aeroelasticity, describes how aircraft lift structures behave when subjected to aerodynamic loads, and finds its application in aerospace, civil, and mechanical engineering. The book begins with a discussion on static behavior, and moves on to static instability and divergence, dynamic behavior leading up to flutter, and fluid structure interaction problems. It covers classical approaches based on low-order aerodynamic models and provides a rationale for adopting certain aeroelastic models. The author describes the formulation of discrete models as well as continuous structural models. He also provides approximate methods for solving divergence, flutter, response and stability of structures, and addresses non-aeroelastic problems in other areas that are similar to aeroelastic problems. Topics covered include: The fundamentals of vibration theory Vibration of single degree of freedom and two degrees of freedom systems Elasticity in the form of an idealized spring element Repetitive motion Flutter phenomenon Classical methods, Rayleigh-Ritz techniques, Galerkin’s technique, influential coefficient methods, and finite element methods Unsteady aerodynamics, and more
Book Synopsis A Modern Course in Aeroelasticity by : Earl H. Dowell
Download or read book A Modern Course in Aeroelasticity written by Earl H. Dowell and published by Springer Nature. This book was released on 2021-10-16 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the sixth edition. It is suitable for one or more courses at the advanced undergraduate level and graduate level to cover the field of aeroelasticity. It is also of value to the research scholar and engineering practitioner who wish to understand the state of the art in the field. This book covers the basics of aeroelasticity or the dynamics of fluid–structure interaction. While the field began in response to the rapid development of aviation, it has now expanded into many branches of engineering and scientific disciplines and treats physical phenomena from aerospace engineering, bioengineering, civil engineering, and mechanical engineering in addition to drawing the attention of mathematicians and physicists. The basic questions addressed are dynamic stability and response of fluid structural systems as revealed by both linear and nonlinear mathematical models and correlation with experiment. The use of scaled models and full-scale experiments and tests play a key role where theory is not considered sufficiently reliable.
Book Synopsis A Modern Course in Aeroelasticity by : Earl Dowell
Download or read book A Modern Course in Aeroelasticity written by Earl Dowell and published by Springer. This book was released on 2014-10-08 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book cover the basics of aeroelasticity or the dynamics of fluid-structure interaction. While the field began in response to the rapid development of aviation, it has now expanded into many branches of engineering and scientific disciplines and treat physical phenomena from aerospace engineering, bioengineering, civil engineering, and mechanical engineering in addition to drawing the attention of mathematicians and physicists. The basic questions addressed are dynamic stability and response of fluid structural systems as revealed by both linear and nonlinear mathematical models and correlation with experiment. The use of scaled models and full scale experiments and tests play a key role where theory is not considered sufficiently reliable. In this new edition the more recent literature on nonlinear aeroelasticity has been brought up to date and the opportunity has been taken to correct the inevitable typographical errors that the authors and our readers have found to date. The early chapters of this book may be used for a first course in aeroelasticity taught at the senior undergraduate or early graduate level and the later chapters may serve as the basis for a more advanced course, a graduate research seminar or as reference to provide an entree to the current research literature.
Download or read book Aeroelasticity written by AV Balakrishnan and published by Springer Science & Business Media. This book was released on 2012-07-12 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author's approach is one of continuum models of the aerodynamic flow interacting with a flexible structure whose behavior is governed by partial differential equations. Both linear and nonlinear models are considered although much of the book is concerned with the former while keeping the latter clearly in view. A complete chapter is also devoted to nonlinear theory. The author has provided new insights into the classical inviscid aerodynamics and raises novel and interesting questions on fundamental issues that have too often been neglected or forgotten in the development of the early history of the subject. The author contrasts his approach with discrete models for the unsteady aerodynamic flow and the finite element model for the structure. Much of the aeroelasticity has been developed with applications formerly in mind because of its enormous consequences for the safety of aircraft. Aeroelastic instabilities such as divergence and flutter and aeroelastic responses to gusts can pose a significant hazard to the aircraft and impact its performance. Yet, it is now recognized that there are many other physical phenomena that have similar characteristics ranging from flows around flexible tall buildings and long span bridges, alternate energy sources such as electric power generation by smart structures to flows internal to the human body. From the foreword: "For the theorist and applied mathematician who wishes an introduction to this fascinating subject as well as for the experienced aeroelastician who is open to new challenges and a fresh viewpoint, this book and its author have much to offer the reader." Earl Dowell, Duke University, USA
Book Synopsis Fundamentals of Fluid-Solid Interactions by : Xiaodong (Sheldon) Wang
Download or read book Fundamentals of Fluid-Solid Interactions written by Xiaodong (Sheldon) Wang and published by Elsevier. This book was released on 2008-08-13 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the computational and theoretical approaches to the coupling of fluid mechanics and solids mechanics. In particular, nonlinear dynamical systems are introduced to the handling of complex fluid-solid interaction systems, For the past few decades, many terminologies have been introduced to this field, namely, flow-induced vibration, aeroelasticity, hydroelasticity, fluid-structure interaction, fluid-solid interaction, and more recently multi-physics problems. Moreover, engineering applications are distributed within different disciplines, such as nuclear, civil, aerospace, ocean, chemical, electrical, and mechanical engineering. Regrettably, while each particular subject is by itself very extensive, it has been difficult for a single book to cover in a reasonable depth and in the mean time to connect various topics. In light of the current multidisciplinary research need in nanotechnology and bioengineering, there is an urgent need for books to provide such a linkage and to lay a foundation for more specialized fields. Interdisciplinary across all types of engineering Comprehensive study of fluid-solid interaction Discusses complex system dynamics derived from interactive systems Provides mathematic modeling of biological systems
Book Synopsis Studies in Nonlinear Aeroelasticity by : Earl H. Dowell
Download or read book Studies in Nonlinear Aeroelasticity written by Earl H. Dowell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: The great bulk of the literature on aeroelasticity is devoted to linear models. The oretical work relies heavily on linear mathematical concepts, and experimental results are commonly interpreted by assuming that the physical model behaves in a linear manner. Nevertheless, significant work has been done in nonlinear aero elasticity, and one may expect this trend to accelerate for several reasons: our ability to compute has increased at an astonishing rate; as linear concepts have been assimilated widely, there is a natural increase in interest in the foundations of nonlinear modeling; and, finally, some phenomena long recognized to be of interest, but beyond the effective range of linear models, are now known to be essentially nonlinear in nature. In this volume, an exhaustive review of the literature is not attempted. Rather the emphasis is on fundamental ideas and a representative selection of problems. Despite obvious successes in research on problems of aeroelasticity and the existence of a broad literature, including a number of excellent monographs, up to now little attention has been devoted to a general nonlinear theory of interac tion. For the most part nonlinearity has been considered either solely in the description of the behavior of a shell or in the description of the motion of a gas.
Book Synopsis Fluid-Structure Interactions and Uncertainties by : Abdelkhalak El Hami
Download or read book Fluid-Structure Interactions and Uncertainties written by Abdelkhalak El Hami and published by John Wiley & Sons. This book was released on 2017-02-07 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the general study of fluid structure interaction with consideration of uncertainties. The fluid-structure interaction is the study of the behavior of a solid in contact with a fluid, the response can be strongly affected by the action of the fluid. These phenomena are common and are sometimes the cause of the operation of certain systems, or otherwise manifest malfunction. The vibrations affect the integrity of structures and must be predicted to prevent accelerated wear of the system by material fatigue or even its destruction when the vibrations exceed a certain threshold.
Book Synopsis Flow Modulation and Fluid—Structure Interaction at Airplane Wings by : Josef Ballmann
Download or read book Flow Modulation and Fluid—Structure Interaction at Airplane Wings written by Josef Ballmann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research work of the collaborative research center SFB401 Flow Modulation and Fluid-Structure Interaction at Airplane Wings at the Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, which is reported in this book, was pos sible due to the financial support of the Deutsche Forschungsgemeinschaft (DFG). The proposal has been approved after evaluation by the referees of DFG selected from other universities and industry, which is gratefully acknowledged. The work is still in progress and now approved to continue until the end of year 2005. More than 50 scientists from universities of the United States, Russia, France, Italy, Japan, Great Britain, Sweden, Netherlands, Switzerland, Austria and research orga nizations NASA, ONERA, NLR, DLR could be invited and have visited the research center, gave seminars on their research on related topics and some of them stayed longer for joined work. Besides its scientific value, also the importance of the pro gram for scientific educa tion becomes evident by looking at the numbers of completed theses, which are up to now about 15 doctoral theses, 40 diploma theses and 70 study theses. The authors of this book acknowledge the valuable support coming from all these persons and institutions. They are especially grateful to the referees having reviewed this work, A. Cohen (Universite Pierre et Marie Curie), J. Cooper (Manchester School of Engineering), W. Devenport (Virginia Tech.), M. Drela (MIT), F. Gern (Avionics Specialties Inc.), A. Griewank (TU Dresden), H. Hönlinger (DLR), P.
Book Synopsis Application of finite elements for computational aeroelasticity by : Ralf Unger
Download or read book Application of finite elements for computational aeroelasticity written by Ralf Unger and published by Cuvillier Verlag. This book was released on 2011-10-19 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, a coupled multiphysical system is considered, whereas the focus is upon aeroelastic problems. For a consistent formulation of such coupled systems, an energy based variational formulation is chosen to describe initially the structural and fluid subsystem by Hamilton’s principle. Both basic fluid model equations - inviscid and viscous fluid models - are employed by this weak variational energy principle. This procedure allows to describe the coupled problem by the classical direct two-field approach as well as by a novel indirect three-field approach. To discretize the entire system consistently with finite elements, the CBS scheme is employed for the fluid domain described by the Navier-Stokes equation in ALE frame of reference. This allows the fluid domain to be temporally deformable, which is essential for aeroelastic computations. The CBS scheme is verified for a wide range of typical fluid problems ranging from inviscid, viscous, incompressible and turbulent flows. A good agreement with data published in literature and with the further solver TAU are found, which underlines the applicability of the CBS scheme for different fluid flow models. The DG-CBS scheme as a novel and attractive approach has been derived from the continuous version. One important advantage of the DG version is the design of the element edge flux to be locally conservative. For the example of the laminar flow over the NACA0012 airfoil as well as for the panel flutter problem, a comparison of the CBS and DG-CBS scheme is made on structured fluid grids including grid convergence studies. With biquadratic, more accurate results in terms of the flutter frequency are obtained with DG-CBS scheme. Moreover, no global system of linear equations needs to be solved at the computational expense of addidtional element edge flux calculations with the DG version. This might be attractive for fluid grids with a high number of degrees of freedom. Consequently, the whole coupled system is further discretized with finite elements including the structural subdomain, the deformation of the fluid grid and the transfer scheme. For the fluid grid deformation, it is found, that all of the presented stiffness evaluation methods perform similarly. The stiffness strategy based on the wall distance and the characteristic length is recommended to be used for the simple testcases with the unstructured grid. For a structured grid around an airfoil, the best grids are obtained with the stiffness methods based on the wall distance. Thus, for general fluid grid deformations, the method, which use a combination of the wall distance and the characteristic length, can be recommended and is hence applied for the panel flutter problem. Based on the unified weak variational coupling schemes, several data transfer schemes are introduced, which share the property of load and energy conservation. With a h-refinement of the integration grid, a significant reduction of the transfer error is observed for low-curved interface meshes. The decrease of the transfer error is limited by the facetting error, which is identified for highly curved interface meshes and for a realistic wing configuration. For the panel flutter problem at Ma∞ = 1.0 and rp = 170, the Galerkin and the dual-Lagrange based transfer as well as the conservative interpolation gives similar results in terms of the frequency and amplitude of the LCO. With its local accuracy together with a global load conservation property and due to the efficiency of a matrix-free transfer scheme, the dual-Lagrange based transfer is an attractive approach for the data transmission of the coupled system. A smooth transfer scheme is proposed, which uses the novel three-field coupling approach with a higher spatial order discretization of the connectivity frame. Regarding the time integration and equilibrium iteration, the three-field approach is assessed for a strongly coupled problem. With the use of the Newton-GMRES iteration scheme, the number of DN cycles is reduced for the three-field approach. Moreover, the same coupling matrices are identified for the three-field approach, which alreay appeared within the iteration process of two-field approach. This allows the application of a simple staggered time integration scheme for the panel flutter problem. The comparison of the two- and three-field approach shows that both, the frequency and the amplitude of the LCO, are only marginally affected. However, the smooth data transfer leads to a clean fluid solution without artificial shocks, which has been observed with the two-field approach and a small number structural elements at the interface. Furthermore, a consistent time integration approach for the structure is proposed, so that both subsystems use the same temporal discretization. Here, similar results in terms of the LCO’s frequency and amplitude are obtained, when the Newmark or the consistent three-point backward difference scheme for the structural time integration of the panel is applied. Thus, the panel flutter problem using a simple staggered time integration scheme with the consistent time integration for the fluid and structural subsystem and with the proposed three-field approach could be analyzed in detail running numerous simulations. At subsonic flow conditions, the panel shows a static deflection behavior in up- or downward direction depending on Ma∞ and rp, but indepentent of rm. On the other hand, the panel exhibits a LCO and the critical values of the dynamic pressure strongly depend on the mass ratio. For low values of rm, a supersonic dip in the stability boundary is observed. It is shown, that the frequency of the LCO increases with increasing Mach number, dynamic pressure and mass ratio. Moreover, a linear dependency between the frequency and the amplitude of the LCO for high mass ratios and low Mach numbers is found. Turbulence modeling with the aid of the CBS scheme in the context of an aeroelastic problem is employed in this thesis. The Spalart-Allmaras turbulence model in conjunction with the CBS scheme is primarily verified with data found in literature and with the flowsolver TAU for pure compressible fluid flow over an airfoil. For the panel flutter problem, the turbulent boundary layer leads to an additional damping behavior. The frequency of the LCO is unaffected by the Reynolds number, but a dependency regarding Re is noticed for the amplitude and the mean deformation. Finally, a strong shift of the critical dynamic pressure to higher values could be observed for the stability chart, which is caused by the damping influence. Subsequent work regarding this thesis certainly involves the investigation of the panel flutter phenomenon in three dimensions. This is motivated by the good performance of the CBS scheme in 3D found in literature. Another topic, which should be considered further, is the application of the three-field coupling approach for more than two subdomains, e.g. fluid-fluid-structure or fluid-structure-structure interaction. In this context, the performance of the presented coupling scheme in conjunction with an incompressible fluid could be a subject for research. Herein, the avoidance of the added mass effect due to an artificial compressibility within the CBS scheme is an interesting aspect. Moreover, attempts to improve the standard finite element methodology by a NURBS based isogeometric analysis can be observed in literature, see [CHB09] and the references therein. A NURBS based coupling scheme is a straightforward enhancement to the present methodology. Further, an adaptive refinement - mesh, polynomial, or a combination of both - is surely an attractive approach to improve the accuracy of the methodology. Finally, from the CFD point of view, more precise numerical methods were established and thus, the CBS scheme could be enhanced with a transition prediction scheme as well as with a large or detached eddy simulation (LES/DES) methodology to capture more complex fluid flow phenomena.
Book Synopsis Load and Motion Transfer Algorithms for Fluid Structure Interaction Problems with Non-matching Discrete Interfaces: Momentum and Energy Conservation, Optimal Discretization and Application to Aeroelasticity by : C. Farhat
Download or read book Load and Motion Transfer Algorithms for Fluid Structure Interaction Problems with Non-matching Discrete Interfaces: Momentum and Energy Conservation, Optimal Discretization and Application to Aeroelasticity written by C. Farhat and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady Aerodynamics and Aeroelasticity of Turbomachines by : Torsten H. Fransson
Download or read book Unsteady Aerodynamics and Aeroelasticity of Turbomachines written by Torsten H. Fransson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 835 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty-one years have passed since the first symposium in this series was held in Paris (1976). Since then there have been meetings in Lausanne (1980), Cambridge (1984), Aachen (1987), Beijing (1989), Notre Dame (1991) and Fukuoka (1994). During this period a tremendous development in the field of unsteady aerodynamics and aeroelasticity in turbomachines has taken place. As steady-state flow conditions become better known, and as blades in the turbomachine are constantly pushed towards lower weight, and higher load and efficiency, the importance of unsteady phenomena appear more clearly. th The 8 Symposium was, as the previous ones, of high quality. Furthermore, it presented the audience with the latest developments in experimental, numerical and theoretical research. More papers than ever before were submitted to the conference. As the organising committee wanted to preserve the uniqueness of the symposium by having single sessions, and thus mingle speakers and audience with different backgrounds in this interdisciplinary field, only a limited number of papers could be accepted. 54 papers were accepted and presented at the meeting, all of which are included in the present proceedings.
Book Synopsis Computational Modeling for Fluid Flow and Interfacial Transport by : Wei Shyy
Download or read book Computational Modeling for Fluid Flow and Interfacial Transport written by Wei Shyy and published by Courier Corporation. This book was released on 2014-06-10 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical applications and examples highlight this treatment of computational modeling for handling complex flowfields. A reference for researchers and graduate students of many different backgrounds, it also functions as a text for learning essential computation elements. Drawing upon his own research, the author addresses both macroscopic and microscopic features. He begins his three-part treatment with a survey of the basic concepts of finite difference schemes for solving parabolic, elliptic, and hyperbolic partial differential equations. The second part concerns issues related to computational modeling for fluid flow and transport phenomena. In addition to a focus on pressure-based methods, this section also discusses practical engineering applications. The third and final part explores the transport processes involving interfacial dynamics, particularly those influenced by phase change, gravity, and capillarity. Case studies, employing previously discussed methods, demonstrate the interplay between the fluid and thermal transport at macroscopic scales and their interaction with the interfacial transport.