314 Vorticity Generation Mechanism by Baroclinic Torque and Buoyancy Effect in a Boundary Region of Dual-Density Flow Field : Experimental Study on the Boundary Region between the Ambient Air and Burnt Gas of a Two-Dimensional Premixed Laminar Flame

Abstract

In this paper, an experimental study of the baroclinic torque and buoyancy effect in a boundary region between the ambient air and burnt gas of a two-dimensional premixed laminar flame is made by shadowgraph method, laser tomography and PIV (Particle Image Velocimetry). It is found that vorticity is generated only on a boundary region in a dual-density non-reaction flow field.