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Open Access Publications from the University of California

Measurement of fluid-flow-velocity profile in turbid media by the use of optical Doppler tomography

  • Author(s): Wang, XJ
  • Milner, TE
  • Chen, Z
  • Stuart Nelson, J
  • et al.

Optical Doppler tomography is demonstrated to be a simple, accurate, and noncontact method for measuring the fluid velocity of laminar flow in small-diameter (͂0.5-mm) ducts. Studies are described that utilize circular (square) plastic(glass) ducts infused with a moving suspension of polymer microspheres in air and buried in an optically turbid medium. The measurement of Doppler-shifted frequencies of backscattered light from moving microspheres is used to construct a high-resolution spatial profile of fluid-flow velocity in the ducts. © 1997 Optical Society of America.

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