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SIMULTANEOUS MEASURMENT OF FLUCTUATING VELOCITY AND PRESSURE USING TIME-RESOLVED PIV AND MINIATURE STATIC-PRESSURE PROBES

Takuya Kawata
Graduate School of Science and Technology, Keio University, 3-14-1, Kohoku-ku, Hiyoshi, 223-8522 Yokohama, Japan; Department of Mechanical Engineering, Tokyo University of Science Yamazaki 2641 Noda, Chiba 278-8510, Japan

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

Résumé

Simultaneous measurement of the fluctuating velocity and pressure is performed combining a miniature static-pressure probe and a time-resolved PIV aiming at further improvement in evaluation of the velocity-pressure correlation. Two static-pressure probes were placed in the measurement domain of the time-resolved PIV and the instantaneous velocity field and the fluctuating velocity are measured simultaneously. The instantaneous pressure filed is estimated from the measured velocity field by numerically solving a discrete Poisson equation for pressure. The values of the estimated pressure are corrected based on the pressure values which are directly measured by the static-pressure probe.