Numerical Simulation Of Vortex Structures In A
Two-dimensional Vertical Bluff-body Burner For
Two Different Hydrocarbon Fuels
Author(s)
H. Kawahara & T. Nishimura
Abstract
The present article treats with numerical simulation of vortical structures in the
combustion field in a two-dimensional bluff-body burner. The numerical results
support the flow visualization results for C3H8 combustion by Chin & Tankin.
We identify the fuel effect on the dynamic vortical structures inside the flame for
C3H8 and CH4 fuels. The thermal buoyancy is found not to be responsible for the
flow instability inside the flame in the presence of a large co-flowing air stream
although there exists thermally induced vortex outside the flame.
Keywords: numerical simulation, vortical structure, bluff-body burner, fuel effect,
thermal buoyancy
1 Introduction
Investigation of unsteady diffusion flames are important for understanding
combustion phenome
Keywords
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