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핀홀 모델기반 Volume-PIV 개발과 원주 후류 측정
도덕희(Deog Hee Doh),문경록(Kyung Roc Moon),조경래(Gyeong Rae Cho) 한국가시화정보학회 2009 한국가시화정보학회 학술발표대회 논문집 Vol.2009 No.11
A new volumetric PIV technique is constructed and is used for the measurements of a cylinder wake. The measurement system consists of 4 cameras(1024 x 992 pixel. 500fps), a Ar-ion laser, two host computers and a synchronizer. A volumetric light beam is illuminated onto the flow field for spatial visualization. For camera calibration the conventional pin-hole model is used. Particle images are reconstructed based upon the voxels using the MART algorithm. The reconstructed voxel images (tomogram pair) of the two consecutive images then analyzed by means of 3D cross-correlation with an iterative multigrid volume deformation technique, returning the three-component velocity vector distribution over the measurement volume. The Reynolds number for the cylinder wake is 315.