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Experiments in Fluids

, Volume 5, Issue 6, pp 418–422 | Cite as

Multiple time-surface characterization of time-dependent, three-dimensional flows

  • A. Ongoren
  • J. Chen
  • D. Rockwell
Article

Abstract

Certain features of the large-scale, time-dependent flow structure from an oscillating, three-dimensional body can be approximated by using combined hydrogen bubble visualization, video recording, and computer-aided design (CAD) reconstruction. This technique requires a single bubble wire and video camera in conjunction with a phase reference from the oscillating body to acquire two-dimensional projections of the flow at desired spanwise locations. In principle, this technique and its extensions can be employed for any unsteady, three-dimensional flow where a suitable phase reference exists. Appropriate generation of bubble timelines leads to three-dimensional “time-surfaces” at selected instants of time, and threreby a three-dimensional space-time estimate of the macroscale features of the flow.

Keywords

Hydrogen Video Camera Flow Structure Video Recording Hydrogen Bubble 
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.

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References

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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • A. Ongoren
    • 1
  • J. Chen
    • 1
  • D. Rockwell
    • 1
  1. 1.Dept. of Mechanical Engineering and MechanicsLehigh UniversityBethlehemUSA

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