Turbulence Effect on Crossflow Around a Circular Cylinder at Subcritical Reynolds Numbers
Author: Willy Z. Sadeh
Publisher:
Published: 1982
Total Pages: 164
ISBN-13:
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Location of Separation on a Circular Cylinder in Crossflow as a Function of Reynolds Number
Author: David W. Coder
Publisher:
Published: 1971
Total Pages: 44
ISBN-13:
DOWNLOAD EBOOKThe Effect of High Intensity Turbulence on the Aerodynamics of a Rigid Circular Cylinder at Subcritical Reynolds Number
Author: D. Surry
Publisher: National Library of Canada
Published: 1969
Total Pages: 44
ISBN-13:
DOWNLOAD EBOOKThe interaction of high intensity turbulence with the flow past a rigid circular cylinder was studied experimentally at subcritical Reynolds numbers. Grids were used to produce homogeneous turbulence fields with longitudinal scales ranging from 0.36D to 4.40D, and with longitudinal intensities greater than 10%. Power and cross-spectra of the turbulence components (the 'system input') were measured in order to carefully define the turbulence characteristics. A model with which measurement of arbitrary two-point pressure correlations could be made was used in the response experiments. Subsequent integrations yielded the spectral properties of the unsteady drag and lift. Measurement of mean drag and Strouhal frequency indicate that to some extent even severe large-scale turbulence can be considered equivalent to an increase in the effective Reynolds number. Vortex shedding is not disrupted drastically by severe turbulence, but is affected more by that at low frequency than at high. The unsteady lift response is still dominated by the vortex shedding, whereas the unsteady drag is primarily a response to turbulence. (Author).
Fluid Mechanics Measurements
Author: R. Goldstein
Publisher: Routledge
Published: 2017-11-13
Total Pages: 740
ISBN-13: 1351447823
DOWNLOAD EBOOKThis 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.
Hydrodynamics Around Cylindrical Structures
Author: Jorgen Fredsoe
Publisher: World Scientific
Published: 1997-03-17
Total Pages: 550
ISBN-13: 981449805X
DOWNLOAD EBOOKThis book discusses the subject of wave/current flow around a cylinder, the forces induced on the cylinder by the flow, and the vibration pattern of slender structures in a marine environment.The primary aim of the book is to describe the flow pattern and the resulting load which develops when waves or current meet a cylinder. Attention is paid to the special case of a circular cylinder. The development in the forces is related to the various flow patterns and is discussed in detail. Regular as well as irregular waves are considered, and special cases like wall proximities (pipelines) are also investigated.The book is intended for MSc students with some experience in basic fluid mechanics and for PhD students.
Numerical Experiments on the Flow Past a Circular Cylinder at Sub-critical Reynolds Number
Author: Patrick Beaudan
Publisher:
Published: 1994
Total Pages: 280
ISBN-13:
DOWNLOAD EBOOKAn Experimental Investigation on the Flow Around a Circular Cylinder in the First Critical Subregion
Author: Hyun Jin Kim
Publisher:
Published: 1986
Total Pages: 506
ISBN-13:
DOWNLOAD EBOOKAn experimental investigation has been carried out on the flow transitions around a smooth circular cylinder in the initial stage of the critical Reynolds number region, where drag coefficient starts to decrease. In this Reynolds number region, intermitent reattachment of the separated boundary layer was found, while only initial separation position excursion was observed in the subcritical region. Large spanwise variations in the surface pressure and wake velocity observed in the first critical subregion were associated with local wake width pulsations caused by spanwise phase variations in the unsteady flow reattachment.
Bluff-Body Wakes, Dynamics and Instabilities
Author: Helmut Eckelmann
Publisher: Springer
Published: 2014-10-05
Total Pages: 364
ISBN-13: 9783662004159
DOWNLOAD EBOOKBluff-body wakes play an important role in many fluid dynamics problems and engineering applications. This book gives and up-to-date account of recent results obtained in the study of bluff-body wakes. Experimental, theoretical and numerical approaches are all comprehensively covered and compared. Topics of particular interest include hydrodynamic instability analyses, three-dimensional pattern formation problems, flow control methods, bifurcation analyses, numerical simulations and turbulence modelling. The main originality of thisvolume is that recent conceptual advances made to describe nonlinear phenomena in general are put to the test on a classical problem in fundamental fluid mechanics, namely the wake structure generated behind a bluff object.
Symposium on Fully Separated Flows
Author: American Society of Mechanical Engineers. Fluids Engineering Division
Publisher:
Published: 1964
Total Pages: 150
ISBN-13:
DOWNLOAD EBOOKScientific and Technical Aerospace Reports
Author:
Publisher:
Published: 1995
Total Pages: 456
ISBN-13:
DOWNLOAD EBOOKLists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
