Author: T. Sarpkaya
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
Book Description
The report presents the results of an experimental and theoretical investigation of separated unsteady flow about a flat plate (a fin or aileron) rotating impulsively from rest to a uniform angular velocity about an axis along its leading edge in an incompressible fluid otherwise at rest or moving steadily and uniformly about the plate. The results show that the early stages of motion are accompanied by torsional oscillations, the frequency of which is identical with the natural frequency of the submerged system. The initial hydrodynamic torque is determined by the added mass-moment of inertia of the plate. In the oscillatory stage of motion the torque is comprised of an angular-velocity-dependent form-torque and an acceleration-dependent inertial torque. These torque components are interdependent as well as time-dependent. The rotation of the plate in a steady uniform flow gives rise to a hinge moment which is considerably larger than that of a plate held fixed at the same instantaneous angle of incidence. (Author).
A Theoretical and Experimental Study of the Fluid Motion about a Flat Plate Rotated Impulsively from Rest to a Uniform Angular Velocity
Author: T. Sarpkaya
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
Book Description
The report presents the results of an experimental and theoretical investigation of separated unsteady flow about a flat plate (a fin or aileron) rotating impulsively from rest to a uniform angular velocity about an axis along its leading edge in an incompressible fluid otherwise at rest or moving steadily and uniformly about the plate. The results show that the early stages of motion are accompanied by torsional oscillations, the frequency of which is identical with the natural frequency of the submerged system. The initial hydrodynamic torque is determined by the added mass-moment of inertia of the plate. In the oscillatory stage of motion the torque is comprised of an angular-velocity-dependent form-torque and an acceleration-dependent inertial torque. These torque components are interdependent as well as time-dependent. The rotation of the plate in a steady uniform flow gives rise to a hinge moment which is considerably larger than that of a plate held fixed at the same instantaneous angle of incidence. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
Book Description
The report presents the results of an experimental and theoretical investigation of separated unsteady flow about a flat plate (a fin or aileron) rotating impulsively from rest to a uniform angular velocity about an axis along its leading edge in an incompressible fluid otherwise at rest or moving steadily and uniformly about the plate. The results show that the early stages of motion are accompanied by torsional oscillations, the frequency of which is identical with the natural frequency of the submerged system. The initial hydrodynamic torque is determined by the added mass-moment of inertia of the plate. In the oscillatory stage of motion the torque is comprised of an angular-velocity-dependent form-torque and an acceleration-dependent inertial torque. These torque components are interdependent as well as time-dependent. The rotation of the plate in a steady uniform flow gives rise to a hinge moment which is considerably larger than that of a plate held fixed at the same instantaneous angle of incidence. (Author).
A Theoretical and Experimental Study of the Fluid Motion about a Flat Plate Rotated Inpulsively from Rest to a Uniform Angular Velocity
Author: Turgut Sarpkaya
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1336
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1336
Book Description
Report
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 260
Book Description
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 260
Book Description
Technical Abstract Bulletin
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 628
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 628
Book Description
NBS Special Publication
Author:
Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 844
Book Description
Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 844
Book Description
Current Hydraulic Laboratory Research in the United States
Author:
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 260
Book Description
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 260
Book Description
Naval Research Reviews
Author:
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 480
Book Description
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 480
Book Description
Government-wide Index to Federal Research & Development Reports
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1234
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1234
Book Description
Mechanics of Flow-Induced Vibration
Author: Rajeev Jaiman
Publisher: Springer Nature
ISBN: 9811985782
Category : Technology & Engineering
Languages : en
Pages : 1028
Book Description
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.
Publisher: Springer Nature
ISBN: 9811985782
Category : Technology & Engineering
Languages : en
Pages : 1028
Book Description
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.