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Conference Papers Year : 2014

Causality and intrinsic thermoacoustic instability modes

Abstract

Direct numerical simulation of a confined laminar premixed flame has been performed in an anechoic combustor, showing self-sustained intrinsic thermoacoustic oscillations. Theoretical predictions based on acoustic jump relations and the n − τ model for the flame are presented and causality concerns are discussed. The instability’s frequency and mode structure are recovered numerically with very good accuracy. A detailed discussion on the interplay of the physical phenomena responsible for this dynamical coupling is also carried out.
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Dates and versions

hal-02166756 , version 1 (27-06-2019)

Identifiers

  • HAL Id : hal-02166756 , version 1
  • OATAO : 23744

Cite

Emilien Courtine, Laurent Selle, Franck Nicoud, Wolfgang Polifke, Camilo Silva, et al.. Causality and intrinsic thermoacoustic instability modes. CTR - Summer Program, Jul 2014, Stanford, United States. pp.169-178. ⟨hal-02166756⟩
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