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DEVELOPMENT OF A MINIATURE PROBE FOR VELOCITY-PRESSURE CORRELATION MEASUREMENT

Yoshitsugu Naka
Department of Mechanical and Aerospace Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan

Shinnosuke Obi
Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

Shigeaki Masuda
Department of Mechanical Engineering, Keio University, 3-14-1, Hiyoshi, Kouhoku-ku, Yokohama, 223-8522, Japan

Abstrakt

A novel technique for simultaneous measurements of fluctuating velocity and pressure is proposed which combines a miniature total pressure probe and an X-wires hot-wire anemometer. The basic performance of the present method is investigated in detail, such as the spatial resolution, effect of the angle of attack and frequency response. The effect of the interference of probes is examined as well. The correlation between the fluctuating pressure and velocity in transverse as well as streamwise directions has been measured in a two-dimensional turbulent mixing layer. The results show partly good agreement with those obtained by other techniques, although substantial improvements are found to be necessary.