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Multicomponent frequency shifting self-aligning laser velocimeters.

J E Rizzo1, N A Halliwell

  • 1Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627Department of Aeronautics, University of Southampton, Southampton, England.

The Review of Scientific Instruments
|August 1, 1978
PubMed
Summary
This summary is machine-generated.

A new, simple laser Doppler velocimeter design allows for easy construction and accurate measurement of fluid flow. This adaptable instrument is ideal for studying complex and turbulent phenomena.

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Area of Science:

  • Fluid dynamics
  • Optical instrumentation

Background:

  • Laser Doppler velocimetry (LDV) is a powerful technique for measuring fluid velocity.
  • Existing LDV systems can be complex and expensive to construct and align.

Purpose of the Study:

  • To present a novel design for a frequency-shifting laser Doppler velocimeter.
  • To detail the construction and alignment of one- and two-component versions.
  • To discuss the extension to three-component measurements.

Main Methods:

  • Utilizes simple lenses and a frequency shifting disk for optical design.
  • Outlines straightforward construction and alignment procedures.
  • Demonstrates adaptability for various applications.

Main Results:

  • Developed inexpensive, precise, and accurate one-, two-, and three-component LDV systems.
  • Instruments are adaptable to a wide range of applications.
  • Particularly advantageous for studying turbulent phenomena and complex flows.

Conclusions:

  • The proposed LDV design offers a cost-effective and versatile solution for fluid velocity measurements.
  • The system's ease of construction and alignment makes it accessible for diverse research.
  • Demonstrated utility in analyzing complex and turbulent flow fields.