Linear Instability Of A Uni Directional Transversely Sheared Mean Flow
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Linear Instability Of A Uni Directional Transversely Sheared Mean Flow
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-05
Linear Instability Of A Uni Directional Transversely Sheared Mean Flow written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-05 with categories.
The effect of spanwise-periodic mean-flow distortions (i.e. streamwise-vortex structures) on the evolution of small-amplitude, single-frequency instability waves in an otherwise two-dimensional shear flow is investigated. The streamwise-vortex structures are taken to be just weak enough so that the spatially growing instability waves behave (locally) like linear perturbations about a uni-directional transversely sheared mean flow. Numerical solutions are computed and discussed for both the mean flow and the instability waves. The influence of the streamwise-vortex wavelength on the properties of the most rapidly growing instability wave is also discussed. Wundrow, David W. Unspecified Center NAS3-27186; RTOP 505-90-53...
Linear Instability Of A Uni Directional Transversely Sheared Mean Flow
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Author :
language : en
Publisher:
Release Date : 1996
Linear Instability Of A Uni Directional Transversely Sheared Mean Flow written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Linear Instability Of A Uni Directional Transversely Sheared Mean Flow Final Report Nasa Cr 198535 Mar 24 1997
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1998*
Linear Instability Of A Uni Directional Transversely Sheared Mean Flow Final Report Nasa Cr 198535 Mar 24 1997 written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998* with categories.
Iutam Symposium On Nonlinear Instability And Transition In Three Dimensional Boundary Layers
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Author : Peter W. Duck
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Iutam Symposium On Nonlinear Instability And Transition In Three Dimensional Boundary Layers written by Peter W. Duck 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 Science categories.
Most fluid flows of practical importance are fully three-dimensional, so the non-linear instability properties of three-dimensional flows are of particular interest. In some cases the three-dimensionality may have been caused by a finite amplitude disturbance whilst, more usually, the unperturbed state is three-dimensional. Practical applications where transition is thought to be associated with non-linearity in a three- dimensional flow arise, for example, in aerodynamics (swept wings, engine nacelles, etc.), turbines and aortic blood flow. Here inviscid `cross-flow' disturbances as well as Tollmien-Schlichting and Görtler vortices can all occur simultaneously and their mutual non-linear behaviour must be understood if transition is to be predicted. The non-linear interactions are so complex that usually fully numerical or combined asymptotic/numerical methods must be used. Moreover, in view of the complexity of the instability processes, there is also a growing need for detailed and accurate experimental information. Carefully conducted tests allow us to identify those elements of a particular problem which are dominant. This assists in both the formulation of a relevant theoretical problem and the subsequent physical validation of predictions. It should be noted that the demands made upon the skills of the experimentalist are high and that the tests can be extremely sophisticated - often making use of the latest developments in flow diagnostic techniques, automated high speed data gathering, data analysis, fast processing and presentation.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
1st Aiaa Theoretical Fluid Mechanics Meeting
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Author :
language : en
Publisher:
Release Date : 1996
1st Aiaa Theoretical Fluid Mechanics Meeting written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Fluid mechanics categories.
Nonlinear Instability Of A Uni Directional Transversely Sheared Mean Flow
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Author : David W. Wundrow
language : en
Publisher:
Release Date : 1994
Nonlinear Instability Of A Uni Directional Transversely Sheared Mean Flow written by David W. Wundrow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1998-07
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-07 with Government publications categories.
Interaction Of Oblique Instability Waves With Weak Streamwise Vortices
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Author : Marvin E. Goldstein
language : en
Publisher:
Release Date : 1994
Interaction Of Oblique Instability Waves With Weak Streamwise Vortices written by Marvin E. Goldstein and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Fluid mechanics categories.
Shallow Flows
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Author : Gerhard H. Jirka
language : en
Publisher: Taylor & Francis
Release Date : 2004-09-15
Shallow Flows written by Gerhard H. Jirka and has been published by Taylor & Francis this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-09-15 with Science categories.
This text presents the key findings of the International Symposium held in Delft in 2003, which explored the process of shallow flows. Shallow flows are found in lowland rivers, lakes, estuaries, bays, coastal areas and in density-stratified atmospheres, and may be observed in puddles, as in oceans. They impact on the life and work of a wide variety of readers, who are here provided with a clear overview of the subject. Shallow flows are intrinsically turbulent. On one hand, there are strongly three-dimensional, small-scale turbulent motions and on the other hand, large-scale quasi-two-dimensional turbulence. This book explains and examines these differences and their effects with sections on transport processes in shallow flows; shallow jets, wakes and mixing layers; stratified and rotating flows in ocean and atmosphere; river and channel flows; and numerical modelling and turbulence closure techniques. The reader is provided with the pick of current studies and a fresh approach to the subject, with expert examination of a fascinating and crucial phenomenon of our world's water systems.