Numerical and analytical investigation of the indirect combustion noise in a nozzle

M. Leyko; F. Nicoud; S. Moreau; T. Poinsot

doi:10.1016/j.crme.2009.06.025

Numerical and analytical investigation of the indirect combustion noise in a nozzle

M. Leyko ^1,² ; F. Nicoud ³; S. Moreau ⁴; T. Poinsot ⁵

¹ SNECMA Villaroche, 77550 Moissey-Cramayel, France
² CERFACS, 42, avenue Coriolis, 31057 Toulouse, France
³ Applied mathematics, Université Montpellier II, France
⁴ GAUS, Faculté de Génie, Université de Sherbrooke, Canada
⁵ CNRS, Institut de mécanique des fluides, Toulouse, France

Comptes Rendus. Mécanique, Combustion for aerospace propulsion, Volume 337 (2009) no. 6-7, pp. 415-425.

Abstract (Original language)
Résumé

Analytical and numerical assessments of the indirect noise generated through a nozzle are presented. The configuration corresponds to an experimental setup operated at DLR by Bake et al. (2008) where an entropy wave is generated upstream of the nozzle by means of an electrical heating device. Both 3-D and 2-D axisymmetric simulations are performed to demonstrate that the experiment is mostly driven by linear acoustic phenomena, including pressure wave reflection at the outlet and entropy-to-acoustic conversion in the accelerated regions. Results show that the acoustic impedance downstream of the nozzle must be accounted for appropriately in order to recover the experimental pressure signal. A good agreement is also obtained with a purely analytical assessment based on the Marble and Candel compact nozzle approximation.

L'évaluation du bruit indirect généré par une tuyère est effectuée de manière analytique et numérique. La configuration étudiée correspond à un dispositif expérimental du DLR exploité par Bake et al. (2008), dans lequel une onde d'entropie est produite en amont de la tuyère au moyen d'un dispositif de chauffage électrique. Des simulations 3-D et 2-D axisymétriques sont effectuées afin de montrer que l'expérience est principalement pilotée par des phénomènes acoustiques linéaires, comprenant les réflections acoustiques en sortie et la génération du bruit d'entropie. Les résultats montrent que l'impédance acoustique en aval de la tuyère doit être prise en compte de façon appropriée afin de retrouver le signal de pression expérimental. Un bon accord est obtenu avec un calcul purement analytique basé sur l'approximation de tuyère compacte de Marble et Candel.

Published online: 2009-06-01

DOI: 10.1016/j.crme.2009.06.025

Keywords: Combustion, Thermoacoustic, Indirect combustion noise, Numerical simulations
Mots-clés : Combustion, Thermoacoustique, Bruit de combustion indirect, Simulations numériques

Author's affiliations:

M. Leyko ^{1, 2}; F. Nicoud ³; S. Moreau ⁴; T. Poinsot ⁵

¹ SNECMA Villaroche, 77550 Moissey-Cramayel, France
² CERFACS, 42, avenue Coriolis, 31057 Toulouse, France
³ Applied mathematics, Université Montpellier II, France
⁴ GAUS, Faculté de Génie, Université de Sherbrooke, Canada
⁵ CNRS, Institut de mécanique des fluides, Toulouse, France

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     author = {M. Leyko and F. Nicoud and S. Moreau and T. Poinsot},
     title = {Numerical and analytical investigation of the indirect combustion noise in a nozzle},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {415--425},
     publisher = {Elsevier},
     volume = {337},
     number = {6-7},
     year = {2009},
     doi = {10.1016/j.crme.2009.06.025},
     language = {en},
}

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M. Leyko; F. Nicoud; S. Moreau; T. Poinsot. Numerical and analytical investigation of the indirect combustion noise in a nozzle. Comptes Rendus. Mécanique, Combustion for aerospace propulsion, Volume 337 (2009) no. 6-7, pp. 415-425. doi : 10.1016/j.crme.2009.06.025. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2009.06.025/

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