A BIPOLAR, TWO COMPONENT LASER-DOPPLER VELOCIMETER.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A FRINGE MODE LASER-DOPPLER VELOCIMETER IS DESCRIBED THAT INSTANTANEOUSLY MEASURES TWO ORTHOGONAL VELOCITY COMPONENTS THAT HAVE FLUCTUATING SIGNS.THE OPTICAL SYSTEM UTILISES AN EQUIANGULAR CONFIGURATION OF THREE INTERSECTING BEAMS WHICH ALLOWS MEASUREMENTS OF THE NORMAL VELOCITY COMPONENT TO BE TAKEN IN CLOSE PROXIMITY TO A WALL.ACOUSTO-OPTIC FREQUENCY SHIFTING OF TWO BEAMS IS USED TO ELIMINATE CROSS CHANNEL INTERFERENCE AND TO PROVIDE DETECTION OF THE VELOCITY POLARITY.THE INSTRUMENT IS APPLICABLE TO FLOWS HAVING VELOCITIES IN THE RANGE OF +OR- 1MMS/SUP -1/ TO +OR- MS/SUP -1/.(A)

Original languageEnglish (US)
JournalJournal of Physics E: Scientific Instruments
Volume8
Issue number9
StatePublished - 1975
Externally publishedYes

Fingerprint

laser doppler velocimeters
Laser Doppler velocimeters
Doppler
Laser
acousto-optics
Equiangular
Acousto-optics
Flow velocity
Optical systems
Interference Channel
proximity
Optics
polarity
Polarity
flow velocity
Optical System
Proximity
interference
Eliminate
configurations

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)
  • Instrumentation

Cite this

A BIPOLAR, TWO COMPONENT LASER-DOPPLER VELOCIMETER. / Adrian, Ronald.

In: Journal of Physics E: Scientific Instruments, Vol. 8, No. 9, 1975.

Research output: Contribution to journalArticle

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