Journal of Advanced Marine Engineering and Technology
- Volume 20 Issue 5
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- Pages.30-38
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- 1996
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- 2234-7925(pISSN)
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- 2234-8352(eISSN)
Development of PIV System by Image Board
이미지 보오드를 이용한 PIV시스템의 개발
Abstract
A PIV system consisting of an image board slit into personal computer and 2-D sheet light projector is developed and related techniques to improve its performance are discussed. A grey-level cross correlation method capable of overcoming particle seeding limitation is suggested. And a sub-pixed interpolation method in determining the vector terminal is preposed by considering 8-neighbours correlation distributing patterns. Furthermore, pressure estimation from the acquired velocity vectors by applying the Poisson equation is persented with reasonable feasibility. As a practical application of the present system, evaporator flows are analysed and attained instantaneous velocity vectors reveal that the flow phenomena maintain turbulent fluctuation.
Keywords