Water Tunnel Measurements Of Unsteady Separation PDF Download
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| Author | : Michael S. Francis |
| Publisher | : |
| Total Pages | : 53 |
| Release | : 1978 |
| Genre | : Unsteady flow (Aerodynamics) |
| ISBN | : |
Download Water Tunnel Measurements of Unsteady Separation Book in PDF, ePub and Kindle
The results of experiments in which a controlled region of flow separation was generated downstream of an oscillating fence-type spoiler located on one surface of an airfoil are discussed. The experiments were conducted in a low speed water tunnel under incompressible flow conditions over a wide range dimensionless frequencies and Reynolds numbers. High speed motion pictures and still photographs of hydrogen bubbles formed at surface mounted electrodes were used to obtain data regarding the shape and growth characteristics of the separation zone. Under certain conditions an energetic vortex-like structure was observed to form behind the spoiler and evolve in a manner determined by the Reynolds number and dimensionless frequency parameters. Observations of flow development reveal that the global structure of the separated region during the formation process is qualitatively similar to the one encountered in classical dynamic stall. (Author).
| Author | : Curtis F. Nelson |
| Publisher | : |
| Total Pages | : 246 |
| Release | : 1990 |
| Genre | : |
| ISBN | : |
Download Measurement and Control of the Unsteady, Separated Flow Downstream of an Oscillating Spoiler Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 704 |
| Release | : 1995 |
| Genre | : Aeronautics |
| ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
| Author | : Marianna Braza |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 588 |
| Release | : 2009-09-29 |
| Genre | : Science |
| ISBN | : 1402098987 |
Download IUTAM Symposium on Unsteady Separated Flows and their Control Book in PDF, ePub and Kindle
This Volume is the Proceedings of the IUTAM Symposium on Unsteady Separated Flows and Their Control held in Corfu, Greece, 18–22 June 2007. This was the second IUTAM Symposium on this subject, following the symposium in Toulouse, in April 2002. The Symposium consisted of single plenary sessions with invited lectures, - lected oral presentations, discussions on special topics and posters. The complete set of papers was provided to all participants at the meeting. The thematic sessions of this Symposium are presented in the following: Experimental techniques for the unsteady ow separation Theoretical aspects and analytical approaches of ow separation Instability and transition Compressibility effects related to unsteady separation Statistical and hybrid turbulence modelling for unsteady separated ows Direct and Large-Eddy Simulation of unsteady separated ows Theoretical/industrial aspects of unsteady separated ow control This IUTAM Symposium concerned an important domain of Theoretical and Applied Mechanics nowadays. It focused on the problem of ow separation and of its control. It achieved a uni ed approach regrouping the knowledge provided from theoretical, experimental, numerical simulation and modelling aspects for unsteady separated ows (incompressible and compressible regimes) and included ef cient control devices to achieve attenuation or suppression of separation. The subject - eas covered important themes in the domain of fundamental research as well as in the domain of applications.
| Author | : |
| Publisher | : |
| Total Pages | : 1048 |
| Release | : |
| Genre | : Science |
| ISBN | : |
Download Technical Abstract Bulletin Book in PDF, ePub and Kindle
| Author | : W. W. Humphreys |
| Publisher | : |
| Total Pages | : 296 |
| Release | : 1988 |
| Genre | : |
| ISBN | : |
Download Experimental Study of the Effect of Streamwise Vortices on Unsteady Turbulent Boundary-layer Separation Book in PDF, ePub and Kindle
This experiment studied the effect of streamwise vortices on unsteady turbulent boundary-layer separation. The objectives were to document the flow field, to characterize the time response of the boundary layer, and to understand the actual mechanisms by which the streamwise vortices modify boundary-layer behavior. A new configuration for non-obtrusive three-component Laser Doppler Anemometry (LDA) determined the phase averaged velocity and Reynolds stress components, in an unsteady water tunnel, at a momentum thickness Reynolds number of 1840. The streamwise vortices were created by three pairs of half-delta wing vortex generators, while the boundary-layer separation was controlled through impulsively initiated opposite-wall suction, which created a strong adverse pressure gradient. The time response of the freestream velocity demonstrates that convection is the primary mechanism by which vortex generators modify the response of the boundary layer. There is an initial fast response throughout the boundary layer which is unaffected by the presence of vortex generators, followed by a slow or convective response, the magnitude of which is substantially modified by the presence of the vortex generators. Flow control, Unsteady turbulent layers. Aircraft, Vortex generators. (jes).
| Author | : National Research Council |
| Publisher | : National Academies Press |
| Total Pages | : 1024 |
| Release | : 2002-01-01 |
| Genre | : Science |
| ISBN | : 0309254671 |
Download Twenty-Third Symposium on Naval Hydrodynamics Book in PDF, ePub and Kindle
"Vive la Revolution!" was the theme of the Twenty-Third Symposium on Naval Hydrodynamics held in Val de Reuil, France, from September 17-22, 2000 as more than 140 experts in ship design, construction, and operation came together to exchange naval research developments. The forum encouraged both formal and informal discussion of presented papers, and the occasion provides an opportunity for direct communication between international peers. This book includes sixty-three papers presented at the symposium which was organized jointly by the Office of Naval Research, the National Research Council (Naval Studies Board), and the Bassin d'Essais des Carènes. This book includes the ten topical areas discussed at the symposium: wave-induced motions and loads, hydrodynamics in ship design, propulsor hydrodynamics and hydroacoustics, CFD validation, viscous ship hydrodynamics, cavitation and bubbly flow, wave hydrodynamics, wake dynamics, shallow water hydrodynamics, and fluid dynamics in the naval context.
| Author | : |
| Publisher | : |
| Total Pages | : 604 |
| Release | : 1976 |
| Genre | : Military research |
| ISBN | : |
Download Research in Progress Book in PDF, ePub and Kindle
| Author | : R. Goldstein |
| Publisher | : Routledge |
| Total Pages | : 740 |
| Release | : 2017-11-13 |
| Genre | : Technology & Engineering |
| ISBN | : 1351447823 |
Download Fluid Mechanics Measurements Book in PDF, ePub and Kindle
This revised edition provides updated fluid mechanics measurement techniques as well as a comprehensive review of flow properties required for research, development, and application. Fluid-mechanics measurements in wind tunnel studies, aeroacoustics, and turbulent mixing layers, the theory of fluid mechanics, the application of the laws of fluid mechanics to measurement techniques, techniques of thermal anemometry, laser velocimetry, volume flow measurement techniques, and fluid mechanics measurement in non-Newtonian fluids, and various other techniques are discussed.
| Author | : National Research Council |
| Publisher | : National Academies Press |
| Total Pages | : 1100 |
| Release | : 1997-09-11 |
| Genre | : Science |
| ISBN | : 0309058791 |
Download Twenty-First Symposium on Naval Hydrodynamics Book in PDF, ePub and Kindle
