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LES of Premixed Flame Propagation in a Free Straight Vortex

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Abstract

The paper presents experimental and numerical investigations of flame propagation in a free straight vortex which is formed by a movable block swirl generation device. PIV was used to characterize the isothermal flow experimentally and high speed video films were used to gain informations on the flame propagation.

Numerical simulations have been performed using the LES technique. The simulations rely on presumed-PDF combustion modeling with a chemical mechanism reduced by an ILDM approach which has been validated on two test cases.

Numerical and experimental study confirm that the phenomenon of the combustion induced vortex breakdown can take place in an unconfined turbulent vortex with a strong inner axial flow. The LES analysis allowed to determine the main physical mechanisms of this phenomenon.

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Authors and Affiliations

  1. Institute for Technical Thermodynamics, Albert-Einstein-Str. 2, 18059, Rostock, Germany

    Hannes Kröger, Egon Hassel, Nikolai Kornev & Detlef Wendig

Authors
  1. Hannes Kröger
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  2. Egon Hassel
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  3. Nikolai Kornev
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  4. Detlef Wendig
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Correspondence to Hannes Kröger.

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Kröger, H., Hassel, E., Kornev, N. et al. LES of Premixed Flame Propagation in a Free Straight Vortex. Flow Turbulence Combust 84, 513–541 (2010). https://doi.org/10.1007/s10494-009-9242-y

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  • DOI: https://doi.org/10.1007/s10494-009-9242-y

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