Abel inversion of deflectometric measurements in dynamic flows.
We present an Abel-inversion algorithm to reconstruct mean and rms refractive-index profiles from spatially resolved statistical measurements of the beam-deflection angle in time-dependent, axisymmetric flows. An oscillating gas-jet diffusion flame was investigated as a test case for applying the algorithm. Experimental data were obtained across the whole field by a rainbow schlieren apparatus. Results show that simultaneous multipoint measurements are necessary to reconstruct the rms refractive index accurately.
Agrawal
A K
AK
School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, USA. aagrawal@ou.edu
Albers
B W
BW
Griffin
D W
DW