Applied Physics B

, 103:271

Simultaneous planar measurements of soot structure and velocity fields in a turbulent lifted jet flame at 3 kHz

Rapid Communication

DOI: 10.1007/s00340-011-4549-5

Cite this article as:
Köhler, M., Boxx, I., Geigle, K.P. et al. Appl. Phys. B (2011) 103: 271. doi:10.1007/s00340-011-4549-5


We describe a newly developed combustion diagnostic for the simultaneous planar imaging of soot structure and velocity fields in a highly sooting, lifted turbulent jet flame at 3000 frames per second, or two orders of magnitude faster than “conventional” laser imaging systems. This diagnostic uses short pulse duration (8 ns), frequency-doubled, diode-pumped solid state (DPSS) lasers to excite laser-induced incandescence (LII) at 3 kHz, which is then imaged onto a high framerate CMOS camera. A second (dual-cavity) DPSS laser and CMOS camera form the basis of a particle image velocity (PIV) system used to acquire 2-component velocity field in the flame. The LII response curve (measured in a laminar propane diffusion flame) is presented and the combined diagnostics then applied in a heavily sooting lifted turbulent jet flame. The potential challenges and rewards of application of this combined imaging technique at high speeds are discussed.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.Institut für VerbrennungstechnikDeutsches Zentrum für Luft-und Raumfahrt (DLR)StuttgartGermany