The Fluid Dynamics And Heat Transfer Effects Of Streamwise Vortices Embedded In A Turbulent Boundary Layer
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The Fluid Dynamics And Heat Transfer Effects Of Streamwise Vortices Embedded In A Turbulent Boundary Layer
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Author : Stanford University. Thermosciences Division. Thermosciences Division
language : en
Publisher:
Release Date : 1988
The Fluid Dynamics And Heat Transfer Effects Of Streamwise Vortices Embedded In A Turbulent Boundary Layer written by Stanford University. Thermosciences Division. Thermosciences Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Boundary layer categories.
An Experimental Investigation Of The Heat Transfer Effects Of A Longitudinal Vortex Embedded In A Turbulent Boundary Layer
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Author : Stanford University. Thermosciences Division. Thermosciences Division
language : en
Publisher:
Release Date : 1985
An Experimental Investigation Of The Heat Transfer Effects Of A Longitudinal Vortex Embedded In A Turbulent Boundary Layer written by Stanford University. Thermosciences Division. Thermosciences Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
The Fluid Dynamics And Heat Trnsfer Effects Of Streamwise Vortices Embedded In A Turbulent Boundary Layer
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Author : Wayne Robert Pauley
language : en
Publisher:
Release Date : 1988
The Fluid Dynamics And Heat Trnsfer Effects Of Streamwise Vortices Embedded In A Turbulent Boundary Layer written by Wayne Robert Pauley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
The Effects Of Streamwise Concave Curvature On Turbulent Boundary Layer Structure
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Author : Albert H. Jeans
language : en
Publisher:
Release Date : 1982
The Effects Of Streamwise Concave Curvature On Turbulent Boundary Layer Structure written by Albert H. Jeans and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Turbulent boundary layer categories.
Concave curvature has a relatively large, unpredictable effect on turbulent boundary layers. Some, but not all previous studies suggest that a large-scale, stationary array of counter-rotating vortices exists within the turbulent boundary layer on a concave wall. The objective of the present study was to obtain a qualitative model of the flow field in order to increase our understanding of the underlying physics. A large free-surface water channel was constructed in order to perform a visual study of the flow. Streamwise components of mean velocity and turbulence intensity were measured using a hot film anemometer. The upstream boundary was spanwise uniform with a momentum thickness to radius of curvature of 0.05. Compared to flat wall flow, large-scale, randomly distributed sweeps and ejections were seen in the boundary layer on the concave wall. The sweeps appear to suppress the normal mechanism for turbulence production near the wall by inhibiting the bursting process. The ejections appear to enhance turbulence production in the outer layers as the low speed fluid convected from regions near the wall interacts with the higher speed fluid farther out. The large-scale structures did not occur at fixed spanwise locations, and could not be called roll cells or vortices. (Author).
Experimental Study Of The Effect Of Streamwise Vortices On Unsteady Turbulent Boundary Layer Separation
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Author : W. W. Humphreys
language : en
Publisher:
Release Date : 1988
Experimental Study Of The Effect Of Streamwise Vortices On Unsteady Turbulent Boundary Layer Separation written by W. W. Humphreys and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
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).
Studies In Turbulence
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Author : Thomas B. Gatski
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Studies In Turbulence written by Thomas B. Gatski 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.
This book contains contributions by former students, colleagues and friends of Professor John L. Lumley, on the occasion of his 60th birthday, in recognition of his enormous impact on the advancement of turbulence research. A variety of experimental, computational and theoretical topics, including turbulence modeling, direct numerical simulations, compressible turbulence, turbulent shear flows, coherent structures and the Proper Orthogonal Decomposition are contained herein. The diversity and scope of these contributions are further acknowledgment of John Lumley's wide ranging influence in the field of turbulence. The large number of contributions by the authors, many of whom were participants in The Lumley Symposium: Recent Developments in Turbulence (held at ICASE, NASA Langley Research Center on November 12 & 13, 1990), has presented us with the unique opportu nity to select a few numerical and theoretical papers for inclusion in the journal Theoretical and Computational Fluid Dynamics for which Professor Lumley serves as Editor. Extended Abstracts of these pa pers are included in this volume and are appropriately marked. The special issue of TCFD will appear this year and will serve as an additional tribute to John Lumley. As is usually the case, the efforts of others have significantly eased our tasks. We would like to express our deep appreciation to Drs. R.
Transport Phenomena In Heat And Mass Transfer
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Author : J.A. Reizes
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Transport Phenomena In Heat And Mass Transfer written by J.A. Reizes and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
Theoretical, numerical and experimental studies of transport phenomena in heat and mass transfer are reported in depth in this volume. Papers are presented which review and discuss the most recent developments in areas such as: Mass transfer; Cooling of electronic components; Phase change processes; Instrumentation techniques; Numerical methods; Heat transfer in rotating machinery; Hypersonic flows; and Industrial applications. Bringing together the experience of specialists in these fields, the volume will be of interest to researchers and practising engineers who wish to enhance their knowledge in these rapidly developing areas.
Numerical Simulation Of Heat Transfer Enhancement Resulting From A Streamwise Vortex Embedded In Laminar And Turbulent Boundary Layer Flows
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Author : David Shan-Ming Wang
language : en
Publisher:
Release Date : 1994
Numerical Simulation Of Heat Transfer Enhancement Resulting From A Streamwise Vortex Embedded In Laminar And Turbulent Boundary Layer Flows written by David Shan-Ming Wang 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.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1989
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 1989 with Aeronautics categories.
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1948
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Mechanics, Applied categories.