1.CORIA, UMR 6614 CNRS, Université et INSA de Rouen,St Etienne du Rouvray,France
Abstract:
Simultaneous stereoscopic PIV, OH and acetone planar laser-induced fluorescence measurements are performed to analyze the
processes involved in the enhancement of flame stabilization by electric field. Instantaneous velocity and mixture fraction
fields are measured simultaneously at the base of a lifted flame to analyze whether the flow properties in front of the flame
when electric field is applied are compatible with a mechanism involving ionic wind. The measurements conditioned on the instantaneous
flame bases with and without the electric field are compared. The velocity in front of the flame decreases with electric field
what is in agreement with the assumption involving ionic wind. To analyze the mixture in front of the flame, a joined analysis
of velocity and mixture fraction is required to show the mixture stays near stoichiometry when the electric field is applied.
The need of a joined analysis illustrates the interest of performing the three laser diagnostics simultaneously.