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Ultrasonic Wave for Fluid Flow

  • Yasushi Takeda
  • Yuji Tasaka
Chapter
Part of the Fluid Mechanics and Its Applications book series (FMIA, volume 101)

Abstract

Ultrasonic velocity profilers (UVP) utilize a pulsed ultrasonic beam and the scattering of ultrasonic waves on tracer particles to obtain instantaneous velocity profiles. This chapter summarizes (1) basic characteristics of ultrasonic waves, their propagation, diffraction, inflection, reflection, transmission, interference, and scattering (Sect. 2.3); (2) the formation of pulsed ultrasonic beams (Sects. 2.4 and 2.5); (3) mode transformations between longitudinal and transversal (shear) waves used in flow measurements in pipes with thicker walls (Sect. 2.6); and (4) basics of ultrasonic transducers that generate ultrasonic beams are also explained (Sect. 2.7). All the explanations about ultrasonic waves given here help to understand the principles and configurations of UVP measurements and to distinguish the content that is ­further highlighted in comparison with other textbooks of ultrasonic physics or ultrasonic techniques.

Keywords

Beam formation Pulsed ultrasonic beam Ultrasonic transducer Ultrasonic wave 

References

  1. 1.
    Povey MJW (1997) Ultrasonic techniques for fluids characterization. Academic, LondonGoogle Scholar
  2. 2.
    Krautkrämer J, Krautkrämer H (1990) Ultrasonic testing of materials, 4th edn, fully revised. Springer, BerlinGoogle Scholar
  3. 3.
    Blitz J, Simpson G (1996) Ultrasonic methods of non-destructive testing. Chapman & Hall, LondonGoogle Scholar

Copyright information

© Springer 2012

Authors and Affiliations

  1. 1.Hokkaido UniversitySapporoJapan
  2. 2.Tokyo Institute of TechnologyTokyoJapan
  3. 3.Faculty of EngineeringHokkaido UniversitySapporoJapan

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