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Experimental measurement of local burning velocity within a rotating flow

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journal contribution
posted on 28.10.2013, 12:10 authored by Edward LongEdward Long, Graham Hargrave
The work presented in this paper details the implementation of a new technique for the measurement of local burning velocity using asynchronous particle image velocimetry. This technique uses the local flow velocity ahead of the flame front to measure the movement of the flame by the surrounding fluid. This information is then used to quantify the local burning velocity by taking into account the translation of the flame via convection. In this paper the developed technique is used to study the interaction between a flame front and a single toroidal vortex for the case of premixed stoichiometric methane and air combustion. This data is then used to assess the impact of vortex structure on flame propagation rates. The burning velocity data demonstrates that there is a significant enhancement to the rate of flame propagation where the flame directly interacts with the rotating vortex. The increases found were significantly higher than expected but are supported by burning velocities [22-24] found in turbulent flames of the same mixture composition. Away from this interaction with the main vortex core, the flame exhibits propagation rates around the value recorded in literature for unperturbed laminar combustion [18-21].

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

LONG, E.J. and HARGRAVE, G.K., 2011. Experimental measurement of local burning velocity within a rotating flow. Flow Turbulence and Combustion, 86 (3-4), pp.455-476.

Publisher

© Springer Science+Business Media B.V.

Version

AM (Accepted Manuscript)

Publication date

2011

Notes

The final publication is available at link.springer.com.

ISSN

1386-6184

eISSN

1573-1987

Language

en