Simultaneous measurement of fluctuating velocity and pressure in the near wake of a circular cylinder

Takuya Kawata, Yoshitsugu Naka, Shinnosuke Obi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Simultaneous measurement of fluctuating velocity and pressure by a static-pressure probe and a hot-wire probe was performed in the near wake of a circular cylinder, in order to strengthen reliability of the measurement technique. Effect of geometry of the static-pressure probe was systematically investigated, and validity of the measurement results was addressed by quantitative comparison with reference data by a large-eddy simulation. Interference between the probes was found to mainly depend on the diameter of the pressure probe and only weakly on the length. A certain time lag between the velocity and pressure signals was detected in the experiment, and the measurement results of velocity-pressure correlation up ̄ and vp ̄ obtained with the correction of the time lag were in good agreement with the computational results. It was also found that the measurement of vp ̄ is extremely sensitive to a small time lag between the velocity and pressure signals, while that of up ̄ is not.

Original languageEnglish
Article number1731
JournalExperiments in Fluids
Volume55
Issue number5
DOIs
Publication statusPublished - 2014

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near wakes
circular cylinders
Circular cylinders
pressure sensors
time lag
static pressure
probes
large eddy simulation
Large eddy simulation
wire
interference
geometry
Wire
Geometry

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes
  • Computational Mechanics
  • Mechanics of Materials

Cite this

Simultaneous measurement of fluctuating velocity and pressure in the near wake of a circular cylinder. / Kawata, Takuya; Naka, Yoshitsugu; Obi, Shinnosuke.

In: Experiments in Fluids, Vol. 55, No. 5, 1731, 2014.

Research output: Contribution to journalArticle

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