Spatial Evolution Of Nonlinear Acoustic Mode Instabilities On Hypersonic Boundary Layers
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Spatial Evolution Of Nonlinear Acoustic Mode Instabilities On Hypersonic Boundary Layers
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-11
Spatial Evolution Of Nonlinear Acoustic Mode Instabilities On Hypersonic Boundary Layers 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 2018-07-11 with categories.
The effects are considered of strong critical layer nonlinearity on the spatial evolution of an initially linear acoustic mode instability wave on a hypersonic flat plate boundary layer. The analysis shows that nonlinearity, which is initially confined to a thin critical layer, first becomes important when the amplitude of the pressure fluctuations become 0(1/M exp 4 In M exp 2), where M is the free stream Mach number. The flow outside the critical layer is still determined by linear dynamics and therefore takes the form of a linear instability wave, but with its amplitude completely determined by the flow within the critical layer. The latter flow is determined by a coupled set of nonlinear equations, which were solved numerically. Goldstein, M. E. and Wundrow, D. W. Glenn Research Center NAS3-25266; NASA ORDER C-99066-G; NGT-50085; RTOP 505-62-21...
Spatial Evolution Of Nonlinear Acoustic Mode Instabilities On Hypersonic Boundary Layers
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Author :
language : en
Publisher:
Release Date : 1989
Spatial Evolution Of Nonlinear Acoustic Mode Instabilities On Hypersonic Boundary Layers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Nonlinear Spatial Evolution Of Inviscid Instabilities On Hypersonic Boundary Layers
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Author :
language : en
Publisher:
Release Date : 1996
Nonlinear Spatial Evolution Of Inviscid Instabilities On Hypersonic Boundary Layers 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.
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.
Recent Developments In Turbulence Management
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Author : K.-S. Choi
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Recent Developments In Turbulence Management written by K.-S. Choi 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.
The European Drag Reduction Meeting has been held on 15th and 16th November 1990 in London. This was the fifth of the annual European meetings on drag reduction in engineering flows. The main objective of this meeting was to discuss up-to-date results of drag reduction research carried out in Europe. The organiser has adopted the philosophy of discussing the yesterday's results rather than the last year's results. No written material has therefore been requested for the meeting. It was only after the meeting the submission of papers was requested to the participants, from which 16 papers were selected for this proceedings volume. The meeting has attracted a record number of participants with a total of 52 researchers from seven European countries, U. K. , France, Germany, the Netherlands, Italy, Switzerland and U. S. S. R. as well as from Japan, Canada and Australia. The subjects covered in this proceedings volume include riblets, LEBUs (Large Eddy Break-Up device), surface roughness, compliant surfaces and polymer additives. Riblets seem to be one of the most extensively studied devices in the past years. Reflecting this situation in the European community, there are six papers on riblets covering their practical applications to aircraft and to a model ship, near-wall coherent structure of the boundary layer and effects of flow three-dimensionality. Possibility of heat-transfer enhancement with riblets and potential use in the laminar flow are also investigated. An analytical model is developed for the boundary-layer with a LEBU device.
Nonlinear Instability Of Hypersonic Flow Past A Wedge
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Author : Institute for Computer Applications in Science and Engineering
language : en
Publisher:
Release Date : 1991
Nonlinear Instability Of Hypersonic Flow Past A Wedge written by Institute for Computer Applications in Science and Engineering and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Theory And Computation In Hydrodynamic Stability
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Author : W. O. Criminale
language : en
Publisher: Cambridge University Press
Release Date : 2019
Theory And Computation In Hydrodynamic Stability written by W. O. Criminale 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 2019 with Mathematics categories.
Offers modern and numerical techniques for the stability of fluid flow with illustrations, an extensive bibliography, and exercises with solutions.
Transition Turbulence And Noise
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Author : Reda R. Mankbadi
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-27
Transition Turbulence And Noise written by Reda R. Mankbadi 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 2013-11-27 with Science categories.
Turbulence takes place in most flow situations whethertheyoccur naturally or in technological systems. Therefore, considerable effort is being expended in an attempt to understand the phenomenon of turbulence. The recent discovery ofcoherent structure in turbulent shear flows and the modem developments in computer capabilities have revolutionized research work in turbulence. There is a strong evidence that the coherent structure in turbulent shear flows is reminiscent of nonlinear stability waves. As such, the interest in nonlinear stability waves has increased not only for the understandingofthe latterstages of the laminar-turbulent transition process, but also for understanding the coherent structures in turbulent flows. Also. the advances in computers have made direct numerical simulation possible at Low-Reynolds numbers and large-eddy simulation possible at high Reynolds numbers. This made first-principles prediction of turbulence-generated noise feasible. Therefore, this book aims at presenting a graduate-level introductory study of turbulence while accounting for such recent views of concern to researchers. This book is an outgrowth oflecture notes on the subject offered to graduate students in engineering. The book should be of interest to research engineers and graduatestudents in science and engineering. The theoretical basis presented is sufficient not only for studying the specialized literature on turbulence but also for theoretical investigations on the subject.
On The Nonlinear Three Dimensional Instability Of Stokes Layers And Other Shear Layers To Pairs Of Oblique Waves
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Author :
language : en
Publisher:
Release Date : 1992
On The Nonlinear Three Dimensional Instability Of Stokes Layers And Other Shear Layers To Pairs Of Oblique Waves written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Resonant Triad In Boundary Layer Stability Part 1 Fully Nonlinear Interaction
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Author :
language : en
Publisher:
Release Date : 1991
Resonant Triad In Boundary Layer Stability Part 1 Fully Nonlinear Interaction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.