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A Study on the Quantitative Visualization of Rayleigh-Bernard Convection Using Thermochromic Liquid Crystal  

배대석 (부경대학교 기계공학부)
김진만 (부경대학교 대학원)
권오봉 (부경대학교 기계공학부)
이동형 (부경대학교 기계공학부)
이연원 (부경대학교 기계공학부)
김남식 (부경대학교 기계공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.27, no.3, 2003 , pp. 395-404 More about this Journal
Abstract
Quantitative data of the temperature and velocity were obtained simultaneously by using liquid crystal tracer. PIV(Particle Image Velocimety) based on a grey-level cross-correlation method was used for visualizing and analysis of the flow field. The temperature gradient was obtained by applying the color-image processing to a visualized image, and a neural-network a1gorithm was applied to the color-to-temperature calibration. This simultaneous measurement was applied to the Rayleigh-Bernard convection. This paper describes the method, and presents the quantitative visualization of Rayleigh-Bernard convection and the effect of aspect ratio and viscosity. Also the experimental results were compared with the numerical results.
Keywords
Thermochromic Liquid Crystal; PIV; Neural-Network;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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