変動圧力測定プローブの開発 : 噴流測定への適用

概要

論文の詳細を見る
The Pressure probe consisting of a fine static tube and a condenser microphone was developed to measure pressure fluctuations in the turbulent flows. The structure and the dimensions of the probe were determined to minimize the error in the measurements of pressure fluctuations. In order to damp the organ-pipe resonance in the static tube, a thin nylon gauze was inserted in front of the diaphragm of the microphone, and the probe exhibited a nearly flat response to 2.0kHz. The dynamic calibration of the probe was carried out in the wake of the cylinder by measuring pressure-and velocity-fluctuations simultaneously, and the measured pressure agreed well with the theoretical pressure predicted from the fluctuating velocity. The probe was also applied to the measurements of pressure fluctuations in jets, and the results suggest that the direct pressure measurements are very effective in detecting the vertical structures in the turbulent shear flows.
一般社団法人日本機械学会の論文
1993-11-25