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Measurement of Fluid Flow

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

Abstract

On the basic of the ultrasonic principle made clear in Chaps. 1– flow velocity profiling can be realized if the Doppler method is applicable to the flow system. There are standard velocity fields, which are the most appropriate systems for examining the performance of ultrasonic velocity profiling (UVP) and training users in making UVP measurements. The standard velocity fields have a one-dimensional one-component velocity distribution, irrespective of whether they are steady or unsteady, such as in the case of flow in a rotating circular cylinder and laminar flow in a pipe. Measuring flow in such systems helps clarify the functions of UVP subject to diverse practical problems. Once velocity information is acquired, it is suitably adjusted in post-processing. Post-processing has two purposes: one is to improve the data quality in response to the inclusion of noise in velocity data, and the other is to derive statistical and other quantities.

Keywords

Measurement uncertainty Noise reduction Post-processing Standard velocity field Vector computation 

References

  1. 1.
    Takeda Y, Haefeil M (1991) Velocity profile measurement by ultrasonic Doppler shift method: evaluation of shape reproducibility. In: Keffer JF, Shah RK, Ganic EN (eds) Experimental heat transfer, fluid mechanics and thermodynamics. Elsevier, New YorkGoogle Scholar
  2. 2.
    Greenspan HP (1990) The theory of rotating fluids. Breukelen Press, BrooklineGoogle Scholar
  3. 3.
    Benton ER, Clark A Jr (1974) Spin-up. Annu Rev Fluid Mech 6:257–280CrossRefGoogle Scholar
  4. 4.
    Drazin P, Reid W (1981) Hydrodynamic stability. Cambridge University Press, New YorkzbMATHGoogle Scholar
  5. 5.
    Mori M, Takeda Y, Taishi T, Furuichi N, Aritomi M, Kikura H (2002) Development of a novel flow metering system using ultrasonic velocity profile measurement. Exp Fluid 32:153–160CrossRefGoogle Scholar
  6. 6.
    Jamshidnia H, Takeda Y (2010) An experimental study of the effect of a baffle on the flow structure in a rectangular open channel using UVP. J Fluid Sci Technol 5:542–557CrossRefGoogle Scholar
  7. 7.
    Kitaura H, Murai Y, Takeda Y, Thomas PJ (2010) Velocity vector field measurement of vortex ring using UVP. Trans JSME Ser B 76:2143–2151Google Scholar
  8. 8.
    Takeda Y (1987) Measurement of velocity profile of mercury flow by ultrasound Doppler shift method. Nucl Technol 79:120–127Google Scholar
  9. 9.
    Furuya N, Tasaka Y, Murai Y, Takeda Y (2009) Development of rheometry based on UVP for visco-elastic liquid. Proceedings, 6th International Symposium on Ultrasonic Doppler Methods, pp 57–60Google Scholar
  10. 10.
    Takeda Y, Fischer WE, Sakakibara J (1994) Decomposition of the modulated waves in a rotating Couette system. Science 28:502–505CrossRefGoogle Scholar
  11. 11.
    Takeda Y (1999) Quasi-periodic state and transition to turbulence in a rotating Couette system. J Fluid Mech 389:81–99zbMATHCrossRefGoogle Scholar
  12. 12.
    Furuichi N, Takeda Y, Kumada M (2003) Spatial structure of the flow through an axisymmetric sudden expansion. Exp Fluid 34:643–650CrossRefGoogle Scholar
  13. 13.
    Holmes P, Lumly JL, Berkooz G (1996) Turbulence, coherent structures, dynamical systems and symmetry. Cambridge University Press, New YorkzbMATHCrossRefGoogle Scholar
  14. 14.
    Schmid PJ (2010) Dynamic mode decomposition of numerical and experimental data. J Fluid Mech 656:5–28MathSciNetzbMATHCrossRefGoogle Scholar
  15. 15.
    Taishi T, Kikura H, Aritomi M (2002) Effect of the measurement volume in turbulent pipe flow measurement by the ultrasonic velocity profile method. Exp Fluid 32:188–196CrossRefGoogle Scholar
  16. 16.
    Murakawa H, Kikura H, Aritomi M (2002) Measurement of Reynolds stress in bubbly flow using ultrasonic Doppler method. Proceedings, 3rd International Symposium on Ultrasonic Doppler Methods in Fluid Mechanics and Fluid Engineering, Lausanne, Switzerland, pp 97–102Google Scholar
  17. 17.
    Ido T, Murai Y, Yamamoto F (2002) Post-processing algorithm for particle tracking velocimetry based on ellipsoidal equations. Exp Fluid 32:326–336CrossRefGoogle Scholar

Copyright information

© Springer 2012

Authors and Affiliations

  • Yuichi Murai
    • 1
  • Noriyuki Furuichi
    • 2
  • Yasushi Takeda
    • 3
    • 4
  • Yuji Tasaka
    • 1
  1. 1.Faculty of EngineeringHokkaido UniversitySapporoJapan
  2. 2.National Metrology Institute of JapanNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
  3. 3.Hokkaido UniversitySapporoJapan
  4. 4.Tokyo Intstitute of TechnologyTokyoJapan

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