Measurements Of Unsteady Turbulent Boundary Layers With Pressure Gradients
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Measurements Of Unsteady Turbulent Boundary Layers With Pressure Gradients
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Author : R. L. Simpson
language : en
Publisher:
Release Date : 1980
Measurements Of Unsteady Turbulent Boundary Layers With Pressure Gradients written by R. L. Simpson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Although periodic unsteady turbulent boundary layers are of real significance in turbomachines and helicopters, little experimental velocity distribution data have been obtained, especially with flow separation. An unsteady turbulent boundary layer facility was developed at SMU to produce almost-sinusoidal waveforms for practical reduced frequencies of the order of unity. Separation occurred on the flat test-wall of the diverging test section. An active boundary layer control system was developed to prevent separation on non-test walls of the test section. Detailed measurements using laser and hot-wire anemometry were made at reduced frequencies of 0.55 and 1.0. Well upstream of separation the flow away from the wall behaved in a quasi-steady manner. Near the wall an unexpected phase shift occurs, which is incompletely explained and may be an instrumentation and apparatus dependent effect.
Turbulent Shear Flows 6
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Author : Jean-Claude Andre
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Turbulent Shear Flows 6 written by Jean-Claude Andre 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 2013-03-09 with Science categories.
Since the inaugural symposium at the Pennsylvania State University in 1977, the venues for the series of biennial symposia on turbulent shear flows have alternated between the USA and Europe. For the Sixth Symposium, the first to be held in France, the city of Toulouse proved a natura] choice, being a centre for the aerospace industry, meteorological research and higher education. The meeting was hosted by the Paul Sabatier University on the southern perimeter of the city, and there nearly 300 workers in the field of turbulence converged to pronounce upon, debate and absorb the current issues in turbulent shear flows and to enjoy the unfailing September sunshine. The meeting had attracted more than 200 offers of papers from which just over 100 full papers and about 20 shorter communications in open forums could be accommodated. The present volume contains 28 of the original symposium presentations selected by the editors. Each contribution has been revised by its authors - sometimes quite extensively -in the light of the oral presentation. It is our hope that the selection provides a substantial statement of permanent interest on current research in the five areas covered by this book, i.e. fundamentals and closures, scalar transport and geophysical flows, aerodynamic flows, complex flows, and numerical simulations.
Numerical And Physical Aspects Of Aerodynamic Flows
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Author : T. Cebeci
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-09
Numerical And Physical Aspects Of Aerodynamic Flows written by T. Cebeci 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 2013-11-09 with Technology & Engineering categories.
This volume contains revised and edited forms of papers presented at the Symposium on Numerical and Physical Aspects of Aerodynamic Flows, held at the California State University from 19 to 21 January 1981. The Symposium was organized to bring together leading research workers in those aspects of aerodynamic flows represented by the five parts and to fulfill the following purposes : first, to allow the presentation of technical papers which provide a basis for research workers to assess the present status of the subject and to formulate priorities for the future; and second, to promote informal discussion and thereby to assist the communication and develop ment of novel concepts. The format ofthe content ofthe volume is similar to that ofthe Symposium and addresses, in separate parts: Numerical Fluid Dynamics, Interactive Steady Boundary Layers, Singularities in Unsteady Boundary Layers, Transonic Flows, and Experimental Fluid Dynamics. The motivation for most of the work described relates to the internal and extern al aerodynamics of aircraft and to the development and appraisal of design methods based on numerical solutions to conservation equations in differential forms, for corresponding components. The chapters concerned with numerical fluid dynamics can, perhaps, be interpreted in a more general context, but the emphasis on boundary-Iayer flows and the special consideration oftransonic flows reflects the interest in external flows and the recent advances which have allowed the calculation methods to encompass transonic regions.
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.
Technical Abstract Bulletin
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Author : Defense Documentation Center (U.S.)
language : en
Publisher:
Release Date : 1964
Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Military art and science categories.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1971
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 1971 with Government publications categories.
Monthly Catalog Of United States Government Publications Cumulative Index
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1976
Monthly Catalog Of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with United States categories.
Japanese Science And Technology 1983 1984
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Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
language : en
Publisher:
Release Date : 1985
Japanese Science And Technology 1983 1984 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Science categories.
91 0145 91 0180
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Author :
language : en
Publisher:
Release Date : 1991
91 0145 91 0180 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 Aeronautics categories.
Unsteady Turbulent Boundary Layers In Adverse Pressure Gradients
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Author : Eugene E. Covert
language : en
Publisher:
Release Date : 1982
Unsteady Turbulent Boundary Layers In Adverse Pressure Gradients written by Eugene E. Covert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
A number of characteristics of an unsteady turbulent boundary layer have been measured on the after part of the upper surface of an 0012 airfoil (X/c = 0.69 and 0.94). The data is taken at chord Reynolds number of 700,000 and over a range of reduced frequencies (based upon the semichord) of 0.5 to 6.4. Mean and unsteady velocity profiles, as well as Reynolds stress profiles, are presented, as is the nonlinear coupling from the unsteady motion into the steady motion. Data is presented and discussed which shows that for this experiment the periodic unsteady turbulent velocity profile tends toward a universal shape. (Author).