変動全圧・速度の同時計測による速度・圧力相関の計測(境界層・せん断流・遷移(4),一般講演)

概要

論文の詳細を見る
A novel experimental technique for simultaneous measurement of fluctuating velocity and pressure is tested in a turbulent mixing layer. The fluctuating total pressure and velocity are simultaneously measured and fluctuating static pressure is calculated from them. Fundamental characteristics of the present technique are demonstrated and their effects are taken into account; e.g., the effect of angle of attack, frequency response, phase delay between velocity and pressure signals. The RMS value of fluctuating static pressure obtained by the present method is significantly greater than that of directly measured fluctuating static pressure. The velocity-pressure correlation is also far from that measured by another method. These inconsistencies may be related to imbalance between dynamics pressure included in total pressure and that calculated from velocity. Further improvements are still necessary to obtain accurate time-series of fluctuating static pressure.
日本流体力学会の論文
2007-08-06