Structure and stability characteristics of turbulent planar flames with inhomogeneous jet in a concentric flow slot burner

Abstract Turbulent flames with compositionally inhomogeneous mixtures are common in many combustion systems. jet a circular nozzle burner were used earlier to study the impact of mixtures, and these studies showed that radius affects flame stability. Accordingly, planar turbulent created concentric flow slot (CFSB) avoid this effect present study. The stability characteristics, mixing field structure, front structure measured, correlations between investigated. mixture fraction was measured non-reacting jets at exit using highly resolved Rayleigh scattering technique, some selected high-speed Planar Laser-Induced Fluorescence (PLIF) OH technique. data show strong range fluctuations. stabilized within environment fluctuation close flammability limits. is also illustrated discussed regime diagram scatter different cases consistent classified regimes. Lean current burner. topology varies consistently from thin, small curvature low level turbulence higher equivalence ratio more wrinkled, larger curvature, but thicker lower ratio.