Laser Doppler Velocimetry for Continuous Flow Solar-pumped Iodine Laser System PDF Download
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Author: Bagher M. Tabibi
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
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Author: Bagher M. Tabibi
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
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Author: Luther R. Gartrell
Publisher:
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Category :
Languages : en
Pages : 28
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Author:
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Category : Aeronautics
Languages : en
Pages : 538
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1484
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1482
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Author: William Joseph Yanta
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ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 64
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Results are presented for an experimental program which investigated the application of an LDV technique in supersonic flows. This paper presents an analysis of the behavior of light-scattering particles in rapidly accelerating or shock decelerated flows, an evaluation of particle production techniques and the results of several velocity measurements. Measurements included the velocity distribution along the nozzle centerline and flow over a diamond airfoil in a Mach 3 tunnel and velocity profiles for a turbulent boundary layer in a Mach 4.8 facility. It is demonstrated that LDV measurements can be made consistently with errors of less than five percent if the particle lag is considered. (Author).
Author: F. N. Weber (Jr.)
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ISBN:
Category : Laser Doppler velocimeter
Languages : en
Pages : 38
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Author: Robert J. Hallermeier
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ISBN:
Category : Fluid dynamic measurements
Languages : en
Pages : 8
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Author: Ricky E. Wilson
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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A computer-integrated LDV system utilizing a Helium-Neon laser was designed, assembled and tested for use in the study of steady flow field quantities. All system elements were integrated to include a traverse mechanism, signal processing and conditioning, computer interface and display. The system was initially calibrated utilizing a rotating wheel of known velocity. Experimental flow measurement tests of the system were conducted across a conventional free jet flow and in the Naval Postgraduate School low speed wind tunnel. The flow field velocity measurements made in the wind tunnel were verified usin an existing pressure data acquisition station and a standard pitot static probe. Keywords: Laser doppler velocimetry.
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781729178720
Category : Science
Languages : en
Pages : 26
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A laser Doppler velocimeter (LDV) system was used to measure iodide vapor flow fields inside two different-sized tubes. Typical velocity profiles across the laser tubes were obtained with an estimated +/-1 percent bias and +/-0.3 to 0.5 percent random uncertainty in the mean values and +/-2.5 percent random uncertainty in the turbulence-intensity values. Centerline velocities and turbulence intensities for various longitudinal locations ranged from 13 to 17.5 m/sec and 6 to 20 percent, respectively. In view of these findings, the effects of turbulence should be considered for flow field modeling. The LDV system provided calibration data for pressure and mass flow systems used routinely to monitor the research laser gas flow velocity. Gartrell, Luther R. and Hunter, William W., Jr. and Lee, Ja H. and Fletcher, Mark T. and Tabibi, Bagher M. Langley Research Center RTOP 505-59-54-03...
