A Study of premixed propagating flame vortex interaction |
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Authors: | G K Hargrave S Jarvis |
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Institution: | 1. Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Loughborough, Leicestershire, UK
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Abstract: | Experimental data is presented for the interaction between a propagating flame and a simple vortex flow field structure generated
in the wake of solid obstacles. The interaction between gas movement and obstacles creates vortex shedding forming a simple
flow field recirculation. The presence of the simple turbulent structure within the gas mixture curls the flame front increasing
curvature and enhancing burning rate. A novel twin camera Particle Image Velocimetry, PIV, was employed to characterise the
flow field recirculation and the interaction with the flame front. The technique allowed the quantification of the flame/vortex
interaction. The twin camera technique provides data to define the spatial variation of both the velocity of the flow field
and flame front. Experimentally obtained values of local flame displacement speed and flame stretch rate are presented for
simple flame/vortex interactions. |
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Keywords: | |
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