Stereoscopic PTV 기법의 개발 및 정확도 검증

A novel stereoscopic particle tracking velocimetry (SPTV) velocity field measurement technique based on the 2frame hybrid PTV method is presented. The expansion of 2D PTV to stereoscopic PTV is facilitated by the fact that the PTV method tracks individual particle centroids. The data processing routine and measurement uncertainty of the SPTV technique are compared with those of conventional stereoscopic PIV (SPIV). In addition, the centroid translation effect of 2D PlV and its effect on SPIV measurements are discussed. To evaluate the performance and measurement accuracy of the developed SPTV technique, it was applied to flow images of rigid body motion and synthetic standard images of jet shear flow and impinging jet flow. Compared to the SPIV method, the SPTV technique has inherited merits of concise and precise velocity evaluation procedures and provides better spatial resolution and measurement accuracy.