Laser Doppler Measurements Of Turbulence In A Two Dimensional Wall Jet On A Flat Plate In Stagnant Surroundings
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Laser Doppler Measurements Of Turbulence In A Two Dimensional Wall Jet On A Flat Plate In Stagnant Surroundings
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Author : Mark Edward Schneider
language : en
Publisher:
Release Date : 1987
Laser Doppler Measurements Of Turbulence In A Two Dimensional Wall Jet On A Flat Plate In Stagnant Surroundings written by Mark Edward Schneider and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1994
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 1994 with Aeronautics categories.
Laser Diagnostic Development And Measurement And Modeling Of Turbulent Flowfields Of Jets And Wakes
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Author : A. J. Lightman
language : en
Publisher:
Release Date : 1983
Laser Diagnostic Development And Measurement And Modeling Of Turbulent Flowfields Of Jets And Wakes written by A. J. Lightman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Anemometer categories.
A two-dimensional laser Doppler anemometer was designed to take measurements in a ducted coaxial flow system having a centerbody separating the jets. The measurements, made in isothermal flow, can be categorized as: central jet only (C02); annular jet only (air); and, combined central and annular jet flow. Radial profiles of the axial and radial/azimuthal velocity were obtained. The central jet only condition approximates a free jet since the central jet diameter is much smaller than the centerbody or duct diameter (1:29.3: 53.2). Measurements of the jet development (diameter, turbulence intensity, etc.) were compared with previous free jet studies. In a study of the isotropy of the turbulent fluctuations it was determined that fully developed turbulent flow begins further downstream than anticipated. Velocity profiles were combined with gas sampling measurements to ascertain jet entrainment. Results show a linear growth of the entrained mass starting at the entrance plane. Downstream (20 diameters) the rate of growth increases to match past studies in that region. The annular jet flow creates a recirculation vortex in the wake of the centerbody. The flowfield was mapped and the streamlines describing the flow were obtained throughout the recirculating flow and further downstream. The location and strength of the vortex center was determined. Velocity scanes were combined to obtain profiles of the average radial and azimuthal components that were directly measured. The interaction of the recirculating annular air jet and the central get was examined. Profiels of the velocity field were obtained for several central jet flow conditions. A normalization plot of the location of the central jet stagnation location agreed well with earlier measurements using a one-dimensional laser doppler anemometer and a different central jet nozzle.
Turbulence Measurements With A Laser Doppler Velocimeter
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Author : William Joseph Yanta
language : en
Publisher:
Release Date : 1973
Turbulence Measurements With A Laser Doppler Velocimeter written by William Joseph Yanta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Laser Doppler velocimeter categories.
Turbulence measurements with a Laser Doppler Velocimeter (LDV) using the dual scatter or differential Doppler mode have been made in a subsonic, fully developed channel flow. The measurements were made using only those light scattering particles occurring naturally in air. Results include mean velocity profiles, turbulence intensities, Reynolds stress distributions and a skewness measurement of the velocity distribution function across the channel. Statistical techniques were used to obtain the various turbulence parameters. Guidelines have been established for the amount of data needed to obtain results with a specified accuracy and confidence level. Measurements have also been made to determine the particle-size distribution. An aerodynamic means was used to determine the size distribution, in contrast to the usual optical procedures. (Modified author abstract).
Two Dimensional Laser Doppler Velocimeter Studies Of A Subsonic Jet Impinging On A Flat Plate
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Author : Abdolhossein NouriNejad
language : en
Publisher:
Release Date : 1982
Two Dimensional Laser Doppler Velocimeter Studies Of A Subsonic Jet Impinging On A Flat Plate written by Abdolhossein NouriNejad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Aircraft exhaust emissions categories.
European Journal Of Mechanics
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Author :
language : en
Publisher:
Release Date : 1994
European Journal Of Mechanics written by 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.
Reportnr Isl Co 213 83
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Author : P. Meyer
language : en
Publisher:
Release Date : 1983
Reportnr Isl Co 213 83 written by P. Meyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Physics Briefs
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Author :
language : en
Publisher:
Release Date : 1994
Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Physics categories.
Near Wall Three Dimensional Turbulence Measurements A Challenge For Laser Velocimetry
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Author :
language : en
Publisher:
Release Date : 1989
Near Wall Three Dimensional Turbulence Measurements A Challenge For Laser Velocimetry 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.
Turbulence Measurements With A Laser Doppler Velocimeter
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Author : William J. Yanta
language : en
Publisher:
Release Date : 1973
Turbulence Measurements With A Laser Doppler Velocimeter written by William J. Yanta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Laser Doppler velocimeter categories.
Turbulence measurements with a Laser Doppler Velocimeter (LDV) using the dual scatter or differential Doppler mode have been made in a subsonic, fully developed channel flow. The measurements were made using only those light scattering particles occurring naturally in air. Results include mean velocity profiles, turbulence intensities, Reynolds stress distributions and a skewness measurement of the velocity distribution function across the channel. Statistical techniques were used to obtain the various turbulence parameters. Guidelines have been established for the amount of data needed to obtain results with a specified accuracy and confidence level. Measurements have also been made to determine the particle-size distribution. An aerodynamic means was used to determine the size distribution, in contrast to the usual optical procedures. (Modified author abstract).