The Structure Of High Reynolds Number Turbulent Boundary Layers
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The Structure Of High Reynolds Number Turbulent Boundary Layers
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Author : James G.. Brasseur
language : en
Publisher:
Release Date : 1994
The Structure Of High Reynolds Number Turbulent Boundary Layers written by James G.. Brasseur and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Reynolds number categories.
An Experimental Investigation Of The Flow Structure Of The Turbulent Boundary Layer
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Author : Peter W. Runstadler
language : en
Publisher:
Release Date : 1963
An Experimental Investigation Of The Flow Structure Of The Turbulent Boundary Layer written by Peter W. Runstadler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Boundary layer categories.
A combination of visual and quantitative measurements is presented, providing a physical picture of the turbulent boundary layer flow structure on a flat plate. The flow structure is shown to consist of three zones, each zone has a one to one correspondence to the well known regions of the u+, y+ mean velocity profile. A wall layer region is shown to exist below y+ = 10. An apparently fully turbulent region exists corresponding to the logarithmic ''law of the wall'' and the ''buffer'' region. An intermittent zone appears to agree closely with the ''wake'' deviation region. An entirely new result of the investigation is the delineation of the structure of the wall layer region. This region is shown to contain a relatively regular structure of low and high velocity fluid streaks alternating in the span direction, together with the ejection of low momentum fluid into the outer flow. Correlations are given for the rate of ejection and the streak spacing. A qualitative description of other features of the wall layer region and the character of the remainder of the boundary layer flow structure is presented. (Author).
The Structure Of High Reynolds Number Turbulent Boundary Layers
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Author : Alexander J. Smits
language : en
Publisher:
Release Date : 1993
The Structure Of High Reynolds Number Turbulent Boundary Layers written by Alexander J. Smits and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Reynolds number categories.
The Structure Of Turbulent Shear Flow
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Author : A. A. R. Townsend
language : en
Publisher: Cambridge University Press
Release Date : 1976
The Structure Of Turbulent Shear Flow written by A. A. R. Townsend and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Mathematics categories.
Develops a physical theory from the mass of experimental results, with revisions to reflect advances of recent years.
The Influence Of Surface Roughness On Supersonic High Reynolds Number Turbulent Boundary Layer Flow
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Author : Robert M. Latin
language : en
Publisher:
Release Date : 1998-03-01
The Influence Of Surface Roughness On Supersonic High Reynolds Number Turbulent Boundary Layer Flow written by Robert M. Latin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-03-01 with Surface roughness categories.
A comprehensive study of rough-wall high speed (M=2.9) high Reynolds number (Re/m = 1.9. 10 to the 7th power) turbulent boundary layer flow was performed consisting of experimental, analytical, and numerical methods. Six wall topologies consisting of a smooth and five rough surfaces (two and three dimensional machined roughness plates; and 80, 36, and 20 grit sand-grain roughened plates) were studied. A confocal laser scan microscope was used to measure the topography of the sand grain roughnesses. The experimental measurement techniques included a convention Pitot pressure probe, laser Doppler velocimetry, hot wire anemometry; color schlieren and laser sheet Mie scattering images. Mean measurements included velocity, Mach number, density, and mass flux. Turbulent measurements included velocity and mass flux turbulence intensities, kinematic Reynolds shear stress, compressible Reynolds shear stress in two planes, and the traverse apparent mass flux. Kinematic turbulent flow statistical properties were found to scale by local mean quantities and displayed a weak dependence on surface roughness. Turbulent flow statistical properties with the explicit appearance of density did not scale by local mean quantities, and had a strong linear dependence on roughness. Surface roughness also had a significant effect on the flow structure size, angles, and energy spectra. A theoretical analysis was performed and a new integral method for the estimation of skin friction was developed. The skin friction estimates were within 4% of compressible semi-empirical relations. A numerical study was performed which used a parabolized Navier Stokes solver with two algebraic turbulence models and the Rotta model for surface roughness. A new method for the estimation of momentum loss improved the numerical flow predictability.
On The Period Of The Coherent Structure In Boundary Layers At Large Reynolds Numbers
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Author :
language : en
Publisher:
Release Date : 1978
On The Period Of The Coherent Structure In Boundary Layers At Large Reynolds Numbers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
Investigation Of The Turbulence Producing Structures In The Boundary Layer
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Author : Stephen Jay Kline
language : en
Publisher:
Release Date : 1991
Investigation Of The Turbulence Producing Structures In The Boundary Layer written by Stephen Jay Kline and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Boundary layer categories.
Turbulent Boundary Layers In Subsonic And Supersonic Flow
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Author : Jean-Paul Dussauge
language : en
Publisher:
Release Date : 1996
Turbulent Boundary Layers In Subsonic And Supersonic Flow written by Jean-Paul Dussauge and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Aerodynamics categories.
Iutam Symposium On Reynolds Number Scaling In Turbulent Flow
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Author : Alexander J. Smits
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Iutam Symposium On Reynolds Number Scaling In Turbulent Flow written by Alexander J. Smits and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This volume presents selected papers from the IUTAM Symposium on Reynolds Number Scaling in Turbulent Flow, convened in Princeton, NJ, USA, September I1-13, 2002. The behavior ofturbulence at high Reynolds number is interesting from a fundamental point of view, in that most theories of turbulence make very specific predictions in the limit of infinite Reynolds number. From a more practical point of view, there exist many applications that involve turbulent flow where the Reynolds numbers are extremely large. For example, large vehicles such as submarines and commercial transports operate at Reynolds 9 numbers based on length ofthe order oft0 , and industrial pipe flows cover a 7 very wide range of Reynolds numbers up to 10 • Many very important applications of high Reynolds number flow pertain to atmospheric and other geophysical flows where extremely high Reynolds numbers are the rule rather than the exception, and the understanding of climate changes and the prediction of destructive weather effects hinges to some extent on our appreciation ofhigh-Reynolds number turbulence behavior. The important effects of Reynolds number on turbulence has received a great deal of recent attention. The objective of the Symposium was to bring together many of the world's experts in this area to appraise the new experimental results, discuss new scaling laws and turbulence models, and to enhance our mutual understanding of turbulence.
Turbulence Structure And Modulation
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Author : Alfredo Soldati
language : en
Publisher: Springer
Release Date : 2014-05-04
Turbulence Structure And Modulation written by Alfredo Soldati and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-04 with Technology & Engineering categories.
Controlling turbulence is an important issue for a number of technological applications. Several methods to modulate turbulence are currently being investigated. This book describes various aspects of turbulence structure and modulation, and explains and discusses the most promising techniques in detail.