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초록· 키워드

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A process of 3-D stereo particle image velocimetry(PIV)was developed for the measurement of an
illuminated sliced section field of 3-D complex flows. The present method includes modeling of
camera by a calibrator based on the homogeneous coordinate system, transformation of the
oblique-angled image to the right-angled image, identification of 2-D velocity vectors by 2-D
cross-correlation equation, stereo matching of 2-D velocity vectors of two cameras, accurate calculation
of 3-D velocity vectors by homogeneous coordinate system, removal of error vectors by a statistical
method followed by a continuity equation criteria, and finally 3-D display as the post processing. An
experimental system was also used for the application of the proposed method. Two high speed digital
CCD cameras and an Argon-Ion Laser for the illumination were adopted to clarify the time-dependent
characteristics of the leading edge extension(LEX) in a highly swept shape applied to a delta wing
found in modern air-fighters.

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Abstract

1. Introduction

2. Stereo PIV

3. Experimentation

4. Result and Discussion

5. Conclusion

Acknowledgement

Reference

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UCI(KEPA) : I410-ECN-0101-2009-550-014217703