In this paper a method of large aperture (Φ500 mm) high sensitivity moire deflectometry is used to obtain multidirectional deflectograms of the asymmetric flow field in hypersonic (M = 10.29) shock tunnel. At the same time, a 3-D reconstructive method of the asymmetric flow field is presented which is based on the integration of the moire deflective angle and the double-cubic many-knot interpolating splines; it is used to calculate the 3-D density distribution of the asymmetric flow field.
© 1991 Optical Society of America
Original Manuscript: December 4, 1989
Published: March 1, 1991
Da-Peng Yan, An-Zhi He, and Xiao-Wu Ni, "New method of asymmetric flow field measurement in hypersonic shock tunnel," Appl. Opt. 30, 770-774 (1991)