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Preface

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  • Credit

Science

Technology

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

References

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

Announcement

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Useful Link

  • User Community
  • APS-DFD
  • ASME-FED
  • NDTnet
  • Companies
  • PSI
  • Warwick


Formular related to UVP method

Echography x = c/2t
Doppler shift fD = vf/c
Wave length l =c/f
Near field length N = D2/4l
Beam divergent sin(g) = 1.22l/D
Acoustic impedance Z = cr
Snell's law sin(a)/sin(b) = c1/c2
Transmission coefficient RT = 2Z2/(z1 + Z2)
Reflection coefficient RR = 1 - RT = (Z2-Z1)/(Z2+Z1)
x Position, distance
c Sound speed
v Velocity of reflector
t Time
f Frequency
D Initial beam diameter
r Density
a, b Beam incident & refrected angle