The Navier-Stokes Equations Applied to the Phenomenon of Dynamic Stall of an Airfoil

The Navier-Stokes Equations Applied to the Phenomenon of Dynamic Stall of an Airfoil PDF Author: William John Poyser
Publisher:
ISBN:
Category : Navier-Stokes equations
Languages : en
Pages : 366

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The Navier-Stokes Equations Applied to the Phenomenon of Dynamic Stall of an Airfoil

The Navier-Stokes Equations Applied to the Phenomenon of Dynamic Stall of an Airfoil PDF Author: William John Poyser
Publisher:
ISBN:
Category : Navier-Stokes equations
Languages : en
Pages : 366

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Development of LES Methodology for the Analysis of High-Reynolds Number 2-D and 3-D Dynamic Stall Phenomenon

Development of LES Methodology for the Analysis of High-Reynolds Number 2-D and 3-D Dynamic Stall Phenomenon PDF Author: Kirti N. Ghia
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 88

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Book Description
The major objective of the AASERT Grant was to improve the analysis tools as well as assure the level of accuracy and efficiency that can be realized in the study of physics of the dynamic stall and related unsteady phenomena, through the development of the LES/DNS methodology. One M.S. and three Ph. D students were supported partially on this grant. The work carried out consisted of study of external unsteady flow using vorticity stream function formulation, analysis of boundary layer receptivity and transition using DNS methodology with spectral technique and, finally, compressibility effects in maneuvering body flows. Significant accomplishment is made in Object Oriented Numerics and high performance computing.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704

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Simulation, Characteriation and Control of Forced Unsteady Viscous Flows Using Navier-Stokes Equations

Simulation, Characteriation and Control of Forced Unsteady Viscous Flows Using Navier-Stokes Equations PDF Author: Kirti N. Ghia
Publisher:
ISBN:
Category : Navier-Stokes equations
Languages : en
Pages : 140

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Analysis of Low-Speed Unsteady Airfoil Flows

Analysis of Low-Speed Unsteady Airfoil Flows PDF Author: Tuncer Cebeci
Publisher: Springer
ISBN: 9783540803553
Category : Technology & Engineering
Languages : en
Pages : 226

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Book Description
The standard textbooks on aerodynamics usually omit any discussion of un steady aerodynamics or, at most, consider it only in a single chapter, based on two justifications. The first is that unsteady aerodynamics should be regarded as a specialized subject required "only" in connection with understanding and an alyzing aeroelastic phenomena such as flutter and gust response, and therefore should be dealt with in related specialist books. The second reason appears to be reluctance to discuss aerodynamics with the inclusion of the time-dependent terms in the conservation equations and the boundary conditions for fear that added complications may discourage the reader. We take the opposite view in this book and argue that a full understanding of the physics of lift generation is possible only by considering the unsteady aerody namics of the starting vortex generation process. Furthermore, certain "steady" flows are inherently unsteady in the presence of flow separation, as for example the unsteady flow caused by the Karman vortex shedding downstream of a cylin der and "static" airfoil stall which is an inherently unsteady flow phenomenon. Therefore, it stands to reason that a unified treatment of aerodynamics that yields steady-state aerodynamics as a special case offers advantages. This rea soning is strengthened by the developments in computational fluid dynamics over the past forty years, which showed that accurate steady-state solutions can be obtained efficiently by solving the unsteady flow equations.

Dynamic Stall of Small Wind Systems

Dynamic Stall of Small Wind Systems PDF Author: Richard B. Noll
Publisher:
ISBN:
Category : Wind power
Languages : en
Pages : 300

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Introduction to Nonlinear Aeroelasticity

Introduction to Nonlinear Aeroelasticity PDF Author: Grigorios Dimitriadis
Publisher: John Wiley & Sons
ISBN: 1118756452
Category : Technology & Engineering
Languages : en
Pages : 593

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Book Description
Introduction to Nonlinear Aeroelasticity Introduces the latest developments and technologies in the area of nonlinear aeroelasticity Nonlinear aeroelasticity has become an increasingly popular research area in recent years. There have been many driving forces behind this development, increasingly flexible structures, nonlinear control laws, materials with nonlinear characteristics and so on. Introduction to Nonlinear Aeroelasticity covers the theoretical basics in nonlinear aeroelasticity and applies the theory to practical problems. As nonlinear aeroelasticity is a combined topic, necessitating expertise from different areas, the book introduces methodologies from a variety of disciplines such as nonlinear dynamics, bifurcation analysis, unsteady aerodynamics, non-smooth systems and others. The emphasis throughout is on the practical application of the theories and methods, so as to enable the reader to apply their newly acquired knowledge Key features: Covers the major topics in nonlinear aeroelasticity, from the galloping of cables to supersonic panel flutter Discusses nonlinear dynamics, bifurcation analysis, numerical continuation, unsteady aerodynamics and non-smooth systems Considers the practical application of the theories and methods Covers nonlinear dynamics, bifurcation analysis and numerical methods Accompanied by a website hosting Matlab code Introduction to Nonlinear Aeroelasticity is a comprehensive reference for researchers and workers in industry and is also a useful introduction to the subject for graduate and undergraduate students across engineering disciplines.

Studies in Nonlinear Aeroelasticity

Studies in Nonlinear Aeroelasticity PDF Author: Earl H. Dowell
Publisher: Springer Science & Business Media
ISBN: 1461239087
Category : Science
Languages : en
Pages : 469

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Book Description
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.

1999 European Wind Energy Conference

1999 European Wind Energy Conference PDF Author: E.L. Petersen
Publisher: Routledge
ISBN: 1134273584
Category : Architecture
Languages : en
Pages : 1281

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Book Description
The 1999 European Wind Energy Conference and Exhibition was organized to review progress, and present and discuss the wind energy business, technology and science for the future. The Proceedings contain a selection of over 300 papers from the conference. They represent a significant update to the understanding of this increasingly important field of energy generation and cover a full range of topics.

Wind Energy for the Next Millennium

Wind Energy for the Next Millennium PDF Author: E. L. Petersen
Publisher: Earthscan
ISBN: 9781902916002
Category : Wind power
Languages : en
Pages : 1290

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Book Description
First Published in 1999. Routledge is an imprint of Taylor & Francis, an informa company.