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 language | English |
|---|---|
| Article number | 1731 |
| Journal | Experiments in Fluids |
| Volume | 55 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2014 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
- Fluid Flow and Transfer Processes
- Computational Mechanics
- Mechanics of Materials
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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 journal › Article
}
TY - JOUR
T1 - Simultaneous measurement of fluctuating velocity and pressure in the near wake of a circular cylinder
AU - Kawata, Takuya
AU - Naka, Yoshitsugu
AU - Obi, Shinnosuke
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84901727528&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901727528&partnerID=8YFLogxK
U2 - 10.1007/s00348-014-1731-7
DO - 10.1007/s00348-014-1731-7
M3 - Article
AN - SCOPUS:84901727528
VL - 55
JO - Experiments in Fluids
JF - Experiments in Fluids
SN - 0723-4864
IS - 5
M1 - 1731
ER -