NDLI: Flow Field Visualization with a New Self-adapting Iteration Algorithm

Content Provider	IEEE Xplore Digital Library
Author	Yizhong Song Zhimin Zhao
Copyright Year	2009
Abstract	A new self-adapting refraction tomography was applied to quantitative measurement of temperature distribution of a flow field. The flow field was given with an alcohol burner. Moire patterns of flow field were produced and captured with a home-made rotary Moire deflectometer. The information of fringe pattern was extracted by phase unwrapping technique with Fourier transform. The relative projection was obtained by theoretical calculation. The density distribution of axisymmetric flow field was calculated by simple self-correlative algebraic reconstruction technique (SSART) based on deflection angles as projections. Eight projections with equal direction interval by 20 degree were used for reconstructing density distribution of a field section. The relative temperature distribution was figured out by theoretical calculation. The actual temperature values of some points on the section were measured with a thermoelectric couple meter, in order to verify the reconstructed result. As the result, the peak error in lab simulation experiment was 4.5%. So, SSART with refraction angle as projection is a super self-adapting refraction tomography.
Starting Page	20
Ending Page	23
File Size	769144
Page Count	4
File Format	PDF
ISBN	9780769535715
DOI	10.1109/GCIS.2009.388
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Visualization Temperature distribution Fourier transforms Interference iterating algorithm Extraterrestrial measurements Educational institutions Data mining Moire patterns fourier transform Integral equations Tomography reconstruction projection Intelligent systems
Content Type	Text
Resource Type	Article

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