Laser moire deflectometry applicable for mini/micro-scale flow visualization

Yaozu Song; Xiangchun Zhang; Honglin Zhang

doi:10.1117/12.509775

29 April 2003 Laser moire deflectometry applicable for mini/micro-scale flow visualization

Yaozu Song, Xiangchun Zhang, Honglin Zhang

Proceedings Volume 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002; (2003) https://doi.org/10.1117/12.509775
Event: Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, 2002, Beijing, China

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.

Citation Download Citation

Yaozu Song, Xiangchun Zhang, and Honglin Zhang "Laser moire deflectometry applicable for mini/micro-scale flow visualization", Proc. SPIE 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, (29 April 2003); https://doi.org/10.1117/12.509775

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