New reconstruction algorithm for moiré tomography in flow field measurements

Bin Zhang; Song Yang; Yizhong Song; Anzhi He

doi:10.1117/1.2395922

1 November 2006 New reconstruction algorithm for moiré tomography in flow field measurements

Bin Zhang, Song Yang, Yizhong Song, Anzhi He

Author Affiliations +

Optical Engineering, Vol. 45, Issue 11, 117002 (November 2006). https://doi.org/10.1117/1.2395922

Abstract

A new iterative reconstruction algorithm is developed and applied to moiré deflection tomography for flow field measurements. The algorithm is derived from the basic deflection formula and based on a modified algebraic reconstruction technique. The precision and convergence of the algorithm are analyzed through a numerical simulation. To capture multidirectional projection data, a rotatable deflectometric system is developed. The efficacy of the new algorithm is assessed by reconstructing an asymmetric temperature field. Furthermore, the algorithm is employed to investigate the image of a cross section of a free jet containing steep gradients and to reconstruct the density field of the rocket exhausted jet.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Bin Zhang, Song Yang, Yizhong Song, and Anzhi He "New reconstruction algorithm for moiré tomography in flow field measurements," Optical Engineering 45(11), 117002 (1 November 2006). https://doi.org/10.1117/1.2395922

Published: 1 November 2006

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