Laser velocimeter and total pressure measurements in circular-to-rectangular transition ducts
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Laser velocimeter and total pressure measurements in circular-to-rectangular transition ducts

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Published by National Aeronautics and Space Administration in [Washington, DC .
Written in English

Subjects:

  • Laser Doppler velocimeter.

Book details:

Edition Notes

StatementWilliam P. Patrick and Duane C. McCormick.
SeriesUnited Technologies Research Center Report -- no. 87-41., NASA-CR -- 182286., NASA contractor report -- NASA CR-182286.
ContributionsMcCormick, Duane C., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15288464M

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Laser Doppler Anemometry (LDA) • Single-point optical velocimetry method Study of the flow between rotating impeller blades of a pump 3-D LDA Measurements on a . 7. PATRICK, W.P. and McCORMICK, D.C., \"Laser velocimeter in and total pressure measurements circular-to-rectangular transition ducts\", NASA CR (). 8. ROSHKO, A, \"On the development of turbulent wakes from vortex streets\", NACA Report No. (). Laser velocimeter and total pressure measurements in circular-to-rectangular transition ducts. data were obtained within two circular-to-rectangular transition ducts at low subsonic speeds. Wash.) was used to measure skin blood flow velocity from either the plantar aspect of the great toe or the plantar aspect of the foot overlying the first metatarsal head (n = 56 limbs). The helium-neon laser Doppler velocimeter uses a monochromatic light source .

  A schematic diagram of our high-resolution Doppler velocimeter for remote measurement of liquid and gaseous discharges is shown in Fig. argon ion laser (Coherent, Innova ) is used to excite an actively stabilized ring dye laser (Coherent, Model ), which has been employed as the transmitter. Patrick WP; McCormick DC () Laser velocimeter and total pressure measurements in circular-to-rectangular transition ducts. NASA CR Google Scholar Sobota TH ; Marble FE () Swirling flows in an annular-to-rectangular transition section. Laser Doppler Velocimetery (LDV) is a technique used to measure the instantaneous velocity of a flow field. This technique, like PIV is non-intrusive and can measure all the three velocity components. The laser Doppler velocimeter sends a monochromatic laser beam toward the target and collects the reflected radiation. [5] Patrick, W. P. and McCormick, D. C., “Laser velocimeter and total pressure measurements in circular-to-rectangular transition ducts.” United Technologies Research Center Report 87 .

  [16] Patrick W. P. and McCormick D. C., “ Laser Velocimeter and Total Pressure Measurements in Circular to Rectangular Transitional Ducts,” United Technology Research Center Rept. , East Hartford, CT,   Laser Velocimeter and Total Pressure Measurements in Circular-to-Rectangular Transition Ducts,” United Technologies Research Center, Tech. Report 4. Miau, J. J., Experimental Investigation of Turbulent Flow Through a Circular-to-Rectangular Transition Duct,”. It is a widely used non-intrusive technique to measure velocities in fluid flows, either locally or in a map. This book presents the various techniques of laser velocimetry, as well as their specific qualities: local measurements or in plane maps, mean or instantaneous values, 3D measurements. An earlier work by Mayer /6/ reported the measurement results on the pressure and velocity fields of a circular-to-rectangular duct and a rectangular-to-circular duct, respectively. Recently, Taylor et al. Î I and Dekam and Calvert 18/ performed experiments on flows through a square-to-circular duct and a square-to-rectangular duct, respectively.