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Causality and intrinsic thermoacoustic instability modes

Courtine, Emilien and Selle, Laurent and Nicoud, Franck and Polifke, Wolfgang and Silva, Camilo and Bauerheim, Michaël and Poinsot, Thierry Causality and intrinsic thermoacoustic instability modes. (2014) In: CTR - Summer Program, 6 July 2014 - 1 August 2014 (Stanford, United States).

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Official URL: https://web.stanford.edu/group/ctr/Summer/SP14/06_Combustion/07_courtine.pdf

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.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02166756
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > EDF (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Other partners > Technische Universität München - TUM (GERMANY)
Other partners > Total (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Centre Européen de Recherche et Formation Avancées en Calcul Scientifique - CERFACS (FRANCE)
Other partners > Météo France (FRANCE)
Other partners > SAFRAN (FRANCE)
Other partners > Université de Montpellier (FRANCE)
Laboratory name:
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Deposited By: Michael Bauerheim
Deposited On:25 Jun 2019 14:57

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