Simultaneous Development of Time Resolved Laser Tomography and PIV
for Flames Propagation Studies
Issue title: International Conference on Optical Technology
and Image Processing in Fluid, Thermal, and Combustion Flow, Yokohama, Japan,
December 1998
Affiliations: CORIA - CNRS, Université et INSA de Rouen,
76821 Mont-Saint-Aignan cedex - France. e-mail: [email protected]
Abstract: An understanding of flame propagation needs the knowledge of the
flame location and of the velocity field near the front. Time resolved laser
Tomography coupled with high resolution cross correlation PIV has been
developed. The method is based on the use of a copper vapor laser and a
high-speed camera. The seeding level used for tomography provides an excellent
resolution of the flame location and of the velocity vectors in the fresh
gases. Experiment is conducted in a simulated engine where turbulence is
controlled by means of a perforated grid. Interest is shown for the
determination of laminar burning velocity and for the study of interaction
between the flame front and the turbulent structures. Perspectives of
stereoscopic PIV are also started on. It is shown that the existence of a
normal component to the sheet plane of the velocity can lead to an erroneous
flame velocity determination.
Keywords: tomography, PIV, time resolved, stereoscopy, flame propagation