F051002 Schlieren 3D-CT Measurement and 3D Printing of an Instantaneous Density Distribution of High-speed Premixed Turbulent Burner Flames

Abstract

Non-scanning 3D-CT technique using a multi-directional quantitative schlieren system with flash light sources, is proposed. The image set of 20 directional schlieren images of target flames are processed by MLEM CT-algorithm to obtain the 3D reconstruction of instantaneous density distribution. In this investigation, the target high-speed turbulent flame is anchored on the burner of a nozzle exit diameter of 4.2 mm. The average flow velocity of the propane-air mixture of equivalence ratio of 1.1 is set to be 4, 6, 8 and 10 m/s. Results of the 3D-reconstructions indicates that the distributions show the complicated shape of the high speed turbulent flames. Three-dimensional solid models of the 3D data have been also made by 3D-printing for data visualizations.