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Developing the Color Full-Scale Schlieren Technique for Flow Visualization

[+] Author Affiliations
Chien-Chih Chen, Yu-Cheng Hung, Chen-Ching Ting

National Taipei University of Technology, Taipei, Taiwan

Shun-Chih Wang

Institute of Occupational Safety and Health, Taipei, Taiwan

Paper No. IMECE2011-62633, pp. 305-312; 8 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5492-1
  • Copyright © 2011 by ASME


The full-scale schlieren technique was famous and especially developed for flow visualization with large area of test section. This article further presents the color full-scale schlieren technique which captures more colorful images and also promotes the resolution of images. In this work, the developed color full-scale schlieren technique used the light source which penetrates through the linear grating color mask with alternated red, green, and blue colors. The applied light source is made of flat plate and with modular structure which is convenient for varying area of the light source. The width of the grating color lines is 6 mm. The applied area of light source and its test section are 2×2 and 1×1 m2 respectively. In future, this developed color full-scale schlieren technique will be further used for e.g. CO flow visualization during incomplete combustion process of fuel gas. The results in this work show beautiful images and also with expected high sensitivity.

Copyright © 2011 by ASME



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