J031022 PIV 計測時における光軸角度が与える可視化精度への影響([J03102]電子情報機器,電子テバイスの強度・信頼性評価と熱制御(2))

概要

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This paper describes visualization errors in PIV (Particle Image Velocimetry) measurement when we set the laser irradiation direction and imaging plane in the same direction. When we irradiate laser from same direction with imaging plane, angle of optical axis become less than 90°. Thus we can't focus on the particle on the measuring plane and we can't control the generation of distortion. To avoid the above problems, we employed scheimpfliig configuration on the visualization experiments and we transformed the distorted image using projective transformation. However, accuracy of PIV measurement is unknown in this condition. In this study, we focused on accuracy of PIV measurement. To discuss accuracy of PIV measurement, we designed a test model and conducted PIV measurement in the case that angles of optical axis are 90°, 60°, 45° and 30°. As a result, results of PIV measurements are in good agreement and not dependent on the angle of optical axis. It can be concluded that accuracy of PIV measurement is not dependent on angle of optical axis.
一般社団法人日本機械学会の論文
2011-09-11