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  • Principle
  • Doppler shift detection
  • Ultrasonic optics
  • Transducers
  • Seeding
  • Resolutions
  • FAQ
  • More in this report


Examples (Gallery)

  • (ST) : Spatiotemporal
  • (FM) : Flow mapping
  • (LM) : Liquid metals
  • (OL) : Opaque liquids
    1. Taylor-Couette Flow (ST)
    2. Wake (ST)
    3. Jet (FM)
    4. Czhokralski Puller (ST)
    5. Mercury


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Spatiotemporal information

UVP gives us spatiotemporal information V(x,t). Although V is one component on the measuring line and x is a spatioal coordinate along the measurement line, this implies that the data is a one-component-one-dimensional (1C1D) solution of Navier-Stokes equation. This is one of the advantages of this method and a basis as a powerful tool in fluid mechanics.

Once 1C1D information is possible, it is also possible to extend the system to obtain 2C2D and 3C3D information about the flow field. "Flow mapping".

The UVP for general fluid mechanical study was developed at the Paul Scherrer Institute (PSI), Villigen, Switzerland. The work was started by Y.Takeda, Dr. in collaboration with J.J.Meister, Dr (now Proffesor of EPFL, Medical Engineering) in 1983, who built the first system similar to the medical equipment.

It should be noted, however, a new type of 1C1D data set requires a change ofthe way of reading the data compared to the conventional pointwise measurement. Data Analysis.