ABSTRAKT

This paper describes a spatial direct numerical simulation of the flow transition of a buoyant diffusion flame established on a rectangular nozzle with an aspect ratio of 2:1. Without applying external perturbations, large vortical structures develop naturally in the flow field. At the downstream, the spatially developing reacting jet shows a tendency of transition to turbulence under the effects of combustion-induced buoyancy. Turbulent inertial range has been observed.