title: Abel inversion of deflectometric measurements in dynamic flows.
abstract: 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.
authors.affiliation: School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma 73019, USA. aagrawal@ou.edu
authors.forename: A K
authors.initials: AK
authors.lastname: Agrawal
authors.forename: B W
authors.initials: BW
authors.lastname: Albers
authors.forename: D W
authors.initials: DW
authors.lastname: Griffin