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Wednesday, July 22, 2020 | History

3 edition of A 3-component laser-doppler velocimeter data acquisition and reduction system found in the catalog.

A 3-component laser-doppler velocimeter data acquisition and reduction system

A 3-component laser-doppler velocimeter data acquisition and reduction system

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  • 40 Currently reading

Published by Stanford University, Dept. of Aeronautics and Astronautics, National Aeronautics and Space Administration, Ames Research Center, National Technical Information Service, distributor in Stanford, CA, [Moffett Field, Calif.], [Springfield, Va .
Written in English

    Subjects:
  • Data acquisition.,
  • Data reduction.,
  • Flow measurement.,
  • Flow velocity.,
  • Laser Doppler velocimeters.,
  • Signal processing.,
  • Velocity measurement.

  • Edition Notes

    Other titlesThree component laser doppler velocimeter data acquisition and reduction system.
    StatementL.C. Rodman, J.H. Bell, R.D. Mehta.
    SeriesJIAA TR -- 63., NASA contractor report -- 177390., NASA contractor report -- NASA CR-177390.
    ContributionsBell, J. H., Mehta, R. D., Ames Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18082776M

    Flow Visualization: Techniques and Examples Laser beam Cylindrical lens ~ Camera Fig. Typical experimental setup of the electrolytic precipitation technique. iron, lead, tin, and brass may be used as an anode, soft solder, such as lead-free solder, is found to produce the "best" smoke. Several flow phenomena mentioned above for a 3 component airfoil in high lift configuration can be seen (separation on the slat lower side, slat wake and main body boundary layer interaction, main body cove separation, slat wake-main body wake and flap boundary layer interaction,..). 53 Fig. 8. .

    Data Acquisition PXI-based control data system with channel A/D and digital I/Os; remote field point with temperature RTD inputs and 8-channel A/D; axis motion control system with programmable PID; client data system: PXI-based with 96 digital I/Os, channel A/D with programmable signal conditioning system. Book of Abstracts of the International Congress on Ultrasonics, May , Metz, France. Congress hosted by Georgia Tech Lorraine in Collaboration with the French Acoustical Society. Congress.

    Subsequent image processing, image interrogation, analysis, and data reconstruction add to data uncertainty. Nonetheless, a state-of-the-art planar PIV system is capable of recording images that yield typically measurements of the velocity (per image frame pair) with an accuracy of approximately 1–2% of the full-scale displacement : Madhavan K T (), Development of data processing techniques for laser Doppler velocimeter based flow measurements, Ph.D. Thesis, IISc, Bangalore. Goldstein R J and Kreid D K (), Measurement of laminar flow development in a square duct laser Doppler flowmeter, ,Vol, pp


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A 3-component laser-doppler velocimeter data acquisition and reduction system Download PDF EPUB FB2

A 3-component laser-doppler velocimeter data acquisition and reduction system (SuDoc NAS ) [L. Rodman] on *FREE* shipping on qualifying : L. Rodman. Get this from a library. A 3-component laser-doppler velocimeter data acquisition and reduction system. [L C Rodman; J H Bell; R D Mehta; Ames Research Center.].

A 3-component laser-Doppler velocimeter data acquisition and reduction system eBook: National Aeronautics and Space Administration NASA: : Kindle Store Skip to main content. Try Prime Hello, Sign in Account & Lists Sign in Account & Lists Author: National Aeronautics and Space Administration NASA.

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Rodman. An experimental comparison method is proposed for the verification of mean flow and turbulence measurements obtained with a three-dimensional laser Doppler velocimeter system. Such measurements can include large errors caused by problems unique to three-dimensional systems.

Direct comparisons of laser and hot cross-wire measurements obtained in two-dimensional flows, as is the Cited by: 2. Updated daily. Explore all research articles, conference papers, preprints and more on ASSEMBLY LANGUAGE.

Find methods information, sources, references or conduct a. The measurement by a 3-d laser Doppler velocimeter of a turbulent flow has been numerically simulated. Errors associated with the probe volume geometry and the coincidence time window concept are by: 8. turbines, are considered. In these cases optical access problems are most severe and standard 3-component velocimeter arrangements which need a solid angle of 30 to 40 degrees for optical access can not be applied.

A specially designed 3-component L2F system, see Schodl (), is on the market today and in use at different European institutions. to the data acquisition and reduction units by the receiving A miniature three-component LDV probe –0. A sub-miniature Laser-Doppler Velocimeter(LDV) system was developed to make.

The acquired information, such as the development of boundary and shear layer and transient vortex structure, is consistent with the measured data of wall pressure and visualization images of the flame, and shows a good agreement with Laser Doppler Velocimeter (LDV) by: 1.

Washington, DC: The National Academies Press. doi: / These measurements were obtained with a three-component Laser Doppler Velocimeter. SCALING OF THE FREE SURFACE JET Rajaratnam and Humphries () studied the mean flow characteristics of free surface jets when the free surface is located at the edge of the jet nozzle.

Laser Doppler Velocimetry (LDV) is a compliment to PIV and is used for non-intrusive, time-resolved (kHz), point measure­ments of local fluid velocities and their fluctuations. Figure 1. A combined PIV-image (flow field) and OH-LIF (Laser Induced Fluorescence) image. Final data reduction/analysis: As described above, the data reduction program should be verified, and the initial data plotted together with the pretest estimates before leaving the test.

In most facilities the only difference between the data available on site during the test and the final data is due to the use of more elaborate averaging.

Suggested Citation:"Prediction of High Reynolds Number Flow Around Naval Vessels."National Research Council. Twenty-Fourth Symposium on Naval gton, DC: The National Academies Press.

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Laser Doppler velocimeter system simulation for sensing aircraft wake vortices. Part 2: Processing and analysis of LDV data (for runs and ) NASA Technical Reports Server.

Laser velocimeter (autocovariance) buffer interface. NASA Technical Reports Server (NTRS) Clemmons, J. I., Jr. A laser velocimeter (autocovariance) buffer interface (L. Mechanical Engineering. Reference to this book ICU International Congress on Ultrasonics Abstract Book, Metz, France, Declercq N.

F. editor () Publication year Acknowledgement The compilation of this book has been made possible with the help of Didier Cassereau, Bertrand Dubus and John Fritsch with support from the Scientific and Technical Committee of.Intro - SciTech 5–9 JANUARY The Largest Event for Aerospace Research, Development, and Technology FINAL PROGRAM #aiaaSciTech KISSIMMEE, FL WHAT’S IMPOSSIBLE TODAY WON’T BE TOMORROW.

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