Abstract
A non-scanning 3D-CT technique using a multi-directional quantitative schlieren system, is proposed to obtain instantaneous density distributions of unsteady premixed flames. This "schlieren 3D-CT" is based on (i) simultaneous acquisition of schlieren images taken from numerous directions, (ii) reproduction of projection images from the schlieren images, and (iii) 3D-CT reconstruction of the projections by an appropriate algorithm. In this paper, 3D-CT reconstruction of a non-axisymmetric steady flame is made with a single-directional quantitative schlieren system. This investigation is conducted as a preliminary research relevant to a massive system having 20 schlieren systems, suitable for the observation of high speed flames.
