Scharr, H.; Jähne, B.; Böckle, S.; Kazenwadel, J.; Kunzelmann, T.; Schulz, Christof:

Flame front analysis in turbulent combustion

In: 22. DAGM Symposium (Deutsche Arbeitsgemeinschaft Mustererkennung), Informatik Aktuell
Kiel: Springer (2000), S. 325-332
Buchaufsatz / Kapitel / Fach: Maschinenbau
Fundamental research of turbulent combustion often requires the unambiguous localization of flame front positions and structures. Laser-induced fluorescence (LIF) imaging provides different possibilities of detecting two-dimensional distributions of species typical for reactive areas. Simultaneous measurements of hydroxyl and formaldehyde laserinduced fluorescence and total number densities by Rayleigh scattering were carried out in a Bunsen type flame, which yields state of the art but noisy images. Nonlinear anisotropic diffusion of edge-enhancing type [1] is shown here to enhance the capabilities of the laser-imaging technique in terms of flame front localization and correlation analysis.