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Proceedings Paper

Laser moire deflectometry applicable for mini/micro-scale flow visualization
Author(s): Yaozu Song; Xiangchun Zhang; Honglin Zhang
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Paper Abstract

In this paper a Laser Moire deflectometry applicable for mini/micro-scale flow visualization is proposed. Based on the moire effect, the displacements of moire fringes can be used to calculate the deflection angle of laser beam, which is induced by the variation of refractive index in thermal flow fluid. Thus, density and temperature distribution of flow fluid can be obtained. The physical and mathematical model of the laser moire deflectometry is presented in detail. A digital image processing method of moire fringes by using Fourier transform is discused. The researches show that laser moire deflectometry can meet needs of mini/micro-scale temperature field for natural convection of a heated thin wire is experimentally demonstrated by means of the laser miore deflectometry.

Paper Details

Date Published: 29 April 2003
PDF: 9 pages
Proc. SPIE 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, (29 April 2003); doi: 10.1117/12.509775
Show Author Affiliations
Yaozu Song, Tsinghua Univ. (China)
Xiangchun Zhang, Tsinghua Univ. (China)
Honglin Zhang, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 5058:
Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002

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