Experiments in Fluids

, Volume 41, Issue 5, pp 711–719 | Cite as

Generalized detection of a turbulent front generated by an oscillating grid

  • Markus HolznerEmail author
  • Alexander Liberzon
  • Michele Guala
  • Arkady Tsinober
  • Wolfgang Kinzelbach
Research Article


This report presents experimental results on the propagation of a turbulent front induced by an oscillating grid starting from rest. The purpose of this preliminary investigation is to implement and validate detection methods of the turbulent/non-turbulent interface, which are based on flow measurements (velocity and vorticity) and scalar intensity, for oscillating grid turbulence. This is done using particle image velocimetry (PIV) and fluorescent dye visualization, separately. The results of both techniques describe the spreading of the turbulent front, confirming the known dependency of the front location, H, on time, t. It is demonstrated, that the level-based detection of a turbulent front can be applied to an unsteady flow, such as grid turbulence advancing into a fluid at rest.


Vorticity Particle Image Velocimetry Particle Image Velocimetry Measurement Particle Tracking Velocimetry Turbulent Region 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by ETH Grant No. 0-20151-03.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Markus Holzner
    • 1
    Email author
  • Alexander Liberzon
    • 1
  • Michele Guala
    • 1
  • Arkady Tsinober
    • 2
  • Wolfgang Kinzelbach
    • 1
  1. 1.ETH ZurichInstitute of Environmental EngineeringZurichSwitzerland
  2. 2.The Iby and Aladar Fleischman Faculty of EngineeringTel Aviv UniversityRamat AvivIsrael

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