MEASUREMENT OF TURBULENCE INTENSITIES USING REAL-TIME LASER-DOPPLER VELOCIMETRY

A technique by which the effect of the random phase fluctuations or Doppler ambiguity can be removed from measurements of turbulence intensities by the laser-Doppler velocimeter is proposed. Because the ambiguity is often much broader band than the turbulence, it is proposed that a sequence of low-pass filters at frequencies above those of the turbulence be used in the measurement of turbulence intensities. The true turbulence intensity is given by the extrapolation of these measurements to zero frequency.

• Corporate Authors:

  Cambridge University Press

  200 Euston Road
  London NW1,   England 
• Authors:
  • George, W K
• Publication Date: 1974-10-21

Media Info

• Features: References;
• Pagination: p. 11-16
• Serial:
  • Journal of Fluid Mechanics
  • Volume: 66 P
  • Issue Number: t 1
  • Publisher: Cambridge University Press

Subject/Index Terms

• TRT Terms: Laser doppler velocimeters; Turbulence; Velocimeters; Velocity
• Old TRIS Terms: Velocity fluctuations
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00084878
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: May 19 1975 12:00AM