The analysis of double-exposed photographic plate can be carried out either by Young's fringe analysis or by a digital image processing technique in Particle Tracking Velocimetry. In this Study, we used digital image processing to two images in one fr...
The analysis of double-exposed photographic plate can be carried out either by Young's fringe analysis or by a digital image processing technique in Particle Tracking Velocimetry. In this Study, we used digital image processing to two images in one frame for analyzing in-cylinder flow fields, and The result of PTV(Particle Tracking Velocimetry) was compared with it of PSV(Particle Streak Velocimetry). Additionally, This technique was verified by three different calibration methods. One is interpolation by invert distance, another is interpolation by area ratio, the third is interpolation by Taylor series 1st.<br/>
In PTV, The error range of curvature is about 1.4∼5 %. The results among three interpolation methods were similar in whole flow fields. Finally, in the comparison of PTV and PSV, PTV can be applicable of the analysis and the flow visualization on in-cylinder flow fields.