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Author : Peter Nolan
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (91 download)
Download or read book Numerical Study of Body Shape and Wing Flexibility in Fluid Structure Interaction written by Peter Nolan and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Haoliang Yu
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Numerical Simulations of Structural and Fluid Dynamics for Aerodynamic Performance Improvement written by Haoliang Yu and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present research aims to understand and improve the aerodynamic performance of airfoils in unmanned aerial vehicle (UAV) and wind energy applications using numerical approaches. Specifically, the research applications include: 1) the flexibility tailoring of passively induced airfoil shapes for thin UAV wings, and 2) the aerodynamic performance evaluation of wind turbine blade airfoils that include idealized leading edge (LE) damage patterns aimed at emulating erosion. In both applications, fundamental insights that motivate subsequent optimum design configurations are sought through the use of computational tools of varying efficiency and fidelity. In regard to the first airfoil type studied, UAVs have attracted special attention in recent decades due to their unique and adaptable functionality for both military and civilian applications. Among fixed-wing UAVs, those with flexible passively-deforming wings have been shown to achieve extended aerodynamic endurance, reduced power consumption, and beneficial stability characteristics. Since neither excessively flexible nor excessively rigid wings maximize aerodynamic performance, flexibility tailoring for such membrane wings is still of significant interest. However, the numerical and experimental studies to date have been mostly limited to 2D studies, specifically to chordwise flexibility. To gain insights into furv ther design improvements, such as enabling extended aerodynamic endurance, more complex 3D geometric flexibilities, as are investigated and described in this work. Emulating a bioinspired flexible UAV wing design, a novel topology optimization using a genetic algorithm with an efficient fluid structure interaction (FSI) model produces a wing frame configuration with optimal flexibility distribution. The decoupled effects of the induced camber and spanwise bending deformation are analyzed to understand their contributions to performance improvements. Regarding the second airfoil type studied, designing wind turbine blades to achieve both extended service life and high operating efficiency is of great interest. Leading edge erosion, which poses significant problems to efficiency, necessitates research into the understanding of the underlying fluid dynamics. However, strong three-dimensionality of flow and relatively small scale of erosion poses great challenges to understanding and predicting the flow behavior numerically in terms of fidelity and computational time. Presented is a reduced order model (ROM) proposed for efficient drag prediction on a streamlined body with surface imperfections that emulate leading-edge roughness or erosion-induced damage. It requires as input only the geometric description of damage. Satisfactory performance is demonstrated via comparison with direct numerical simulations. Insights into the flow physics influencing both form and friction contributions to total drag are presented, a preferable damage mode from an engineering design aspect is revealed. In summary, the described work addresses the research gaps through applying a set of numerical tools with varying fidelity and efficiency to conduct investigations from the aspects of aerodynamic performance, geometric design, and optimization. The results of the research provide new understanding in how to improve aerodynamic performance in both airfoil application types.
Author : Bhuiyan Shameem Mahmood Ebna Hai
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659302848
Total Pages : 88 pages
Book Rating : 4.3/5 (28 download)
Download or read book Numerical Approximation of Fluid Structure Interaction (FSI) Problem written by Bhuiyan Shameem Mahmood Ebna Hai and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now-a-days advanced composite materials are being applied to many aircraft structures in order to improve performance and save weight. But Aircraft wings can break due to FSI effect. Because of thrust force, turbulent flow, FSI plays an important role and complex mechanical effects are aroused. But only numerical approaches can be used to solve such problems due to nonlinear properties of fluid, material and shape of the structures. The principal aim of this research is to explore and understand the behaviour of the FSI during the impact of a deformable material (of aircraft wings) on air. This project is focused on the analysis of Navier-Stokes and Elastodynamics equations in the ALE frameworks in order to simulate numerically the FSI effect on a double wedge airfoil. Also one of the main aims of this research is to study the Euler-Bernoulli Beam, the static and dynamic response of a cantilever beam, for a simplified model to determine the vertical vibration of the aircraft wings. In this case we use Approximate method in order to determine the vertical vibration and finally we choose a suitable space-dependent function that satisfy the requirements at the boundaries.
Author : Wolfgang Schröder
Publisher : Springer
ISBN 13 : 9783642263729
Total Pages : 0 pages
Book Rating : 4.2/5 (637 download)
Download or read book Summary of Flow Modulation and Fluid-Structure Interaction Findings written by Wolfgang Schröder and published by Springer. This book was released on 2012-09-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vortex Sheets of Aircraft in Takeoff and Landing.- An Adaptive Implicit Finite Volume Scheme for Compressible Turbulent Flows about Elastic Configurations.- Timestep Control for Weakly Instationary Flows.- Adaptive Multiscale Methods for Flow Problems: Recent Developments.- Interaction of Wing-Tip Vortices and Jets in the Extended Wake.- Experimental and Numerical Investigation of Unsteady Transonic Airfoil Flow.- Enabling Technologies for Robust High-Performance Simulations in Computational Fluid Dynamics.- Influencing Aircraft Wing Vortices.- Development of a Modular Method for Computational Aero-structural Analysis of Aircraft.- A Unified Approach to the Modeling of Airplane Wings and Numerical Grid Generation Using B-Spline Representations.- Parallel and Adaptive Methods for Fluid-Structure-Interactions.- Iterative Solvers for Discretized Stationary Euler Equations.- Unsteady Transonic Fluid - Structure - Interaction at the BAC 3-11 High Aspect Ratio Swept Wing.- Structural Idealization of Flexible Generic Wings in Computational Aeroelasticity.- Aero-structural Dynamics Experiments at High Reynolds Numbers.
Download or read book Numerical Study of Fluid-structure Interaction Problem written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marianna Braza
Publisher : Springer Nature
ISBN 13 : 9813349603
Total Pages : 384 pages
Book Rating : 4.8/5 (133 download)
Download or read book Fluid-Structure-Sound Interactions and Control written by Marianna Braza and published by Springer Nature. This book was released on 2021-05-05 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a thorough and unique record of recent advances in the important scientific fields fluid–structure interaction, acoustics and control of priority interest in the academic community and also in an industrial context regarding new engineering designs. It updates advances in these fields by presenting state-of-the-art developments and achievements since the previous Book published by Springer in 2018 after the 4th FSSIC Symposium. This book is unique within the related literature investigating advances in these fields because it addresses them in a complementary way and thereby enhances cross-fertilization between them, whereas other books treat these fields separately.
Author : Marwan Moubachir
Publisher : CRC Press
ISBN 13 : 1420003240
Total Pages : 312 pages
Book Rating : 4.4/5 (2 download)
Download or read book Moving Shape Analysis and Control written by Marwan Moubachir and published by CRC Press. This book was released on 2006-01-13 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Problems involving the evolution of two- and three-dimensional domains arise in many areas of science and engineering. Emphasizing an Eulerian approach, Moving Shape Analysis and Control: Applications to Fluid Structure Interactions presents valuable tools for the mathematical analysis of evolving domains. The book illustrates the efficie
Author : Wei Shyy
Publisher : Cambridge University Press
ISBN 13 : 1107067987
Total Pages : 321 pages
Book Rating : 4.1/5 (7 download)
Download or read book An Introduction to Flapping Wing Aerodynamics written by Wei Shyy and published by Cambridge University Press. This book was released on 2013-08-19 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an ideal book for graduate students and researchers interested in the aerodynamics, structural dynamics and flight dynamics of small birds, bats and insects, as well as of micro air vehicles (MAVs), which present some of the richest problems intersecting science and engineering. The agility and spectacular flight performance of natural flyers, thanks to their flexible, deformable wing structures, as well as to outstanding wing, tail and body coordination, is particularly significant. To design and build MAVs with performance comparable to natural flyers, it is essential that natural flyers' combined flexible structural dynamics and aerodynamics are adequately understood. The primary focus of this book is to address the recent developments in flapping wing aerodynamics. This book extends the work presented in Aerodynamics of Low Reynolds Number Flyers (Shyy et al. 2008).
Author : Rajeev Jaiman
Publisher : Springer Nature
ISBN 13 : 9811985782
Total Pages : 1028 pages
Book Rating : 4.8/5 (119 download)
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.
Author : Alain Dervieux
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.3/5 (91 download)
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.
Author : Cornel Marius Murea
Publisher : Elsevier
ISBN 13 : 0081023804
Total Pages : 210 pages
Book Rating : 4.0/5 (81 download)
Download or read book Stable Numerical Schemes for Fluids, Structures and their Interactions written by Cornel Marius Murea and published by Elsevier. This book was released on 2017-09-01 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents numerical algorithms for solving incompressible fluids, elastic structures and fluid-structure interactions. It collects some of the fundamental finite element methods as well as new approaches.For Stokes and Navier-Stokes equations, the mixed finite element method is employed. An arbitrary Lagrangian Eulerian framework is used for fluids in a moving domain. Schemes for linear and St Venant-Kirchhoff non-linear dynamic elasticity are presented. For fluid-structure interaction, two schemes are analyzed: the first is fully implicit and the second is semi-implicit, where the fluid domain is computed explicitly and consequently the computational time is considerably reduced.The stability of the schemes is proven in this self-contained book. Every chapter is supplied with numerical tests for the reader. These are aimed at Masters students in Mathematics or Mechanical Engineering. - Presents a self-contained monograph of schemes for fluid and elastic structures, including their interactions - Provides a numerical analysis of schemes for Stokes and Navier-Stokes equations - Covers dynamic linear and non-linear elasticity and fluid-structure interaction
Author : Marianna Braza
Publisher : Springer Nature
ISBN 13 : 3030555941
Total Pages : 599 pages
Book Rating : 4.0/5 (35 download)
Download or read book Advances in Critical Flow Dynamics Involving Moving/Deformable Structures with Design Applications written by Marianna Braza and published by Springer Nature. This book was released on 2021-02-10 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the latest knowledge concerning critical phenomena arising in fluid-structure interaction due to movement and/or deformation of bodies. The focus of the book is on reporting progress in understanding turbulence and flow control to improve aerodynamic / hydrodynamic performance by reducing drag, increasing lift or thrust and reducing noise under critical conditions that may result in massive separation, strong vortex dynamics, amplification of harmful instabilities (flutter, buffet), and flow -induced vibrations. Theory together with large-scale simulations and experiments have revealed new features of turbulent flow in the boundary layer over bodies and in thin shear layers immediately downstream of separation. New insights into turbulent flow interacting with actively deformable structures, leading to new ways of adapting and controlling the body shape and vibrations to respond to these critical conditions, are investigated. The book covers new features of turbulent flows in boundary layers over wings and in shear layers immediately downstream: studies of natural and artificially generated fluctuations; reduction of noise and drag; and electromechanical conversion topics. Smart actuators as well as how smart designs lead to considerable benefits compared with conventional methods are also extensively discussed. Based on contributions presented at the IUTAM Symposium “Critical Flow Dynamics involving Moving/Deformable Structures with Design applications”, held in June 18-22, 2018, in Santorini, Greece, the book provides readers with extensive information about current theories, methods and challenges in flow and turbulence control, and practical knowledge about how to use this information together with smart and bio-inspired design tools to improve aerodynamic and hydrodynamic design and safety.
Author : Michael P. Paidoussis
Publisher : Elsevier
ISBN 13 : 0123973341
Total Pages : 944 pages
Book Rating : 4.1/5 (239 download)
Download or read book Fluid-Structure Interactions: Volume 2 written by Michael P. Paidoussis and published by Elsevier. This book was released on 2016-02-05 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second of two volumes concentrating on the dynamics of slender bodies within or containing axial flow, Volume 2 covers fluid-structure interactions relating to shells, cylinders and plates containing or immersed in axial flow, as well as slender structures subjected to annular and leakage flows. This volume has been thoroughly updated to reference the latest developments in the field, with a continued emphasis on the understanding of dynamical behaviour and analytical methods needed to provide long-term solutions and validate the latest computational methods and codes, with increased coverage of computational techniques and numerical methods, particularly for the solution of non-linear three-dimensional problems. - Provides an in-depth review of an extensive range of fluid-structure interaction topics, with detailed real-world examples and thorough referencing throughout for additional detail - Organized by structure and problem type, allowing you to dip into the sections that are relevant to the particular problem you are facing, with numerous appendices containing the equations relevant to specific problems - Supports development of long-term solutions by focusing on the fundamentals and mechanisms needed to understand underlying causes and operating conditions under which apparent solutions might not prove effective
Author : Werner Haase
Publisher : Springer Science & Business Media
ISBN 13 : 3540454896
Total Pages : 381 pages
Book Rating : 4.5/5 (44 download)
Download or read book Progress in Computational Flow-Structure Interaction written by Werner Haase and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft design processes require extensive work in the area of both aerodynamics and structure, fonning an environment for aeroelasticity investigations. Present and future designs of European aircraft are characterized by an ever increasing aircraft size and perfonnance. Strong weight saving requirements are met by introduction of new materials, leading to more flexible structure of the aircraft. Consequently, aeroelastic phenomena such as vortex-induced aeroelastic oscillations and moving shock waves can be predominant and may have a significant effect on the aircraft perfonnance. Hence, the ability to estimate reliable margins for aeroelastic instabilities (flutter) or dynamic loads (buffeting) is a major concern to the aircraft designer. As modern aircrafts have wing bending modes with frequencies that are low enough to influence the flight control system, demands on unsteady aerodynamics and structural analysis to predict flight control effectiveness and riding comfort for passengers are extremely high. Therefore, the aircraft industries need an improved capacity of robust, accurate and reliable prediction methods in the coupled aeroelastic, flight mechanics and loads disciplines. In particular, it is necessary to develop/improve and calibrate the numerical tools in order to predict with high level of accuracy and capability complex and non-classical aeroelastic phenomena, including aerodynamic non-linearities, such as shock waves and separation, as well as structural non-linearities, e. g. control surface free-play. Nowadays, robust methods for structural analysis and linearised unsteady aerodynamics are coupled and used by the aircraft industry to computationally clear a new design from flutter.
Author : Aria Alimi
Publisher :
ISBN 13 : 9783737608145
Total Pages : pages
Book Rating : 4.6/5 (81 download)
Download or read book Modeling and Numerical Simulation of Fluid-Structure Interaction in Circle of Willis written by Aria Alimi and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stefan Frei
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110494256
Total Pages : 386 pages
Book Rating : 4.1/5 (14 download)
Download or read book Fluid-Structure Interaction written by Stefan Frei and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-11-20 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph discusses modeling, adaptive discretisation techniques and the numerical solution of fluid structure interaction. An emphasis in part I lies on innovative discretisation and advanced interface resolution techniques. The second part covers the efficient and robust numerical solution of fluid-structure interaction. In part III, recent advances in the application fields vascular flows, binary-fluid-solid interaction, and coupling to fractures in the solid part are presented. Moreover each chapter provides a comprehensive overview in the respective topics including many references to concurring state-of-the art work. Contents Part I: Modeling and discretization On the implementation and benchmarking of an extended ALE method for FSI problems The locally adapted parametric finite element method for interface problems on triangular meshes An accurate Eulerian approach for fluid-structure interactions Part II: Solvers Numerical methods for unsteady thermal fluid structure interaction Recent development of robust monolithic fluid-structure interaction solvers A monolithic FSI solver applied to the FSI 1,2,3 benchmarks Part III: Applications Fluid-structure interaction for vascular flows: From supercomputers to laptops Binary-fluid–solid interaction based on the Navier–Stokes–Cahn–Hilliard Equations Coupling fluid-structure interaction with phase-field fracture: Algorithmic details
Author : Annika Eberle
Publisher :
ISBN 13 :
Total Pages : 135 pages
Book Rating : 4.:/5 (936 download)
Download or read book Fluid-structure Interaction and Gyroscopic Sensing in Flapping, Flexing Bio-inspired Wings written by Annika Eberle and published by . This book was released on 2015 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flying animals use the flexibility of their wings to perform impressive aerodynamic maneuvers that are not yet achievable using engineered systems. Since insects do not possess muscles within their wings, these animals must depend on the passive interactions between wing flexibility, wing actuation, and fluid-structure interaction to determine wing shape. As a result, insect wings serve as useful models for understanding the biological principles that govern the design of flexible-winged flyers. This work investigates two key aspects of insect wing flexibility: fluid-structure interaction and gyroscopic sensing. First, to explore the relationship between wing flexibility and fluid-structure interaction, a 2D wing model was developed by coupling a vortex particle method to a finite element model. For a range of actuation frequencies and flexural stiffnesses that are relevant for insect flight, we show that peak lift and thrust forces coincide with the structural resonance of the system. Second, to understand the mechanism(s) that might allow insect wings to serve as gyroscopic sensors, a 3D structural dynamics model of a flapping, flexing, and rotating wing was created along with a robotic model for validation. We show that the rotation of an insect's body might induce torsion in the wing, which could stimulate an insect's mechanoreceptors and trigger reflexive responses to body rotations. Since halteres, the quintessential examples of biological gyroscopes, are dumbbell-shaped structures that were derived from hind wings, evolution suggests that wings and halteres likely possess similar gyroscopic sensing capabilities. To understand more about gyroscopic sensing in nature, we used analytical and finite element models to re-examine haltere dynamics. Finally, we used quasi-steady aerodynamics and rigid body dynamics to investigate how the aerodynamic and gyroscopic forces differ for halteres and wings. These results provide the first combined experimental and computational evidence that wings may serve as both flight-force actuators and gyroscopic sensors.
