대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2003년도 춘계학술대회
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- Pages.1609-1614
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- 2003
홀로그래피 간섭 토모그래피 개발 및 3차원 자연대류 열전달에의 적용
Development of a Holographic Interferometric Tomography System and Its Application to Three-Dimensional Natural Convection
초록
In this study, a practical holographic interferometric tomography system, which is instantaneous and non-contact for measuring three dimensional flow field, was developed. The system consists of holographic recording/reconstruction system, fringe analysis code and computational tomography code and it is developed with Gill environment for general users. The developed system was applied to three-dimensional natural convection from a discrete flush-mounted circular heat source on the bottom of a cubic enclosure. The heat source was located at the off-center of the bottom plate so that three-dimensional temperature field can be achieved. A set of multi-directional holographic interferograms was recorded by employing a double-reference beam, double-exposure holographic technique. Optical pathlength data were extracted from the recorded interferometric data and finally three dimensional temperature field inside the cube was reconstructed.
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