The structure of non-axisymmetric diffusion/partially-premixed flame was explored in this study. Line-integrated self-emission data were collected and converted to reconstructed point data by computed tomography. Modified Shepp- Logan filter and polar raster were chosen in this process. Reconstructed point data were interpreted to visible flame height, self-emission distribution and cross-sectional shape. Assumptions and limitations were discussed.
In upstream of the flame, the cross-sections were rectangular shape. And they changed to circular shape in downstream. In the case of rectangular flame, flame height was shorter than circular flame at high equivalence ratio because sooting started later and soot extinction was more rapid. In the case of rectangular flame, sooting was depressed in comparison with circular flame at high equivalence ratio because soot extinction was more rapid and the flame zone was thinner.
