Comptes Rendus
Combustion, flow and spray dynamics for aerospace propulsion
Application of numerical simulations to predict aircraft combustor ignition
Comptes Rendus. Mécanique, Volume 341 (2013) no. 1-2, pp. 201-210.

The present study aims at contributing to the development of a methodology to predict and improve the ignition performances of aircraft combustors. A model has been developed to investigate the early growth of a spherical ignition kernel in a two-phase flow mixture. It has been combined with a multiphysic code through two different approaches. The ignition kernel model is used to build the ignition probability map of a combustor. The output of the model can also be introduced as an initial condition in an unsteady simulation to test the flame propagation in the combustor. To validate both methods, RANS and LES simulations have been performed on an experimental combustion chamber, reproducing one sector of an industrial combustor.

Lʼobjectif de cette étude est le développement dʼune méthodologie permettant de prévoir lʼallumage dʼune chambre de combustion aéronautique. Un modèle dʼallumage a été développé afin dʼétudier lʼexpansion dʼun noyau dʼallumage sphérique au sein dʼun brouillard. Il peut être couplé à un code de calcul CFD, et utilisé selon deux approches. La première consiste à établir une cartographie de probabilité dʼallumage à partir dʼun champ CFD non-réactif. La deuxième consiste à utiliser la solution du modèle comme condition initiale afin de réaliser un calcul de propagation de la flamme au foyer. Afin de valider ces deux approches, des simulations RANS et LES ont été réalisées sur une configuration de chambre de combustion équipée dʼun système dʼinjection industriel.

Published online:
DOI: 10.1016/j.crme.2012.11.009
Keywords: Two-phase flows, Large–Eddy simulation, Reynolds-average Navier–Stokes, Lagrangian, Combustion
Mot clés : Écoulements diphasiques, Simulation aux Grands Échelles, Équation de Navier–Stokes moyennée, Combustion

Guillaume Linassier 1, 2; Anne Bruyat 1; Philippe Villedieu 1; Nicolas Bertier 3; C. Laurent 1; Olivier Rouzaud 1; Renaud Lecourt 4; Hubert Verdier 2; Gérard Lavergne 1

1 ONERA–The French Aerospace Lab, 31055 Toulouse, France
2 TURBOMECA–Safran group, 64511 Bordes cedex, France
3 ONERA–The French Aerospace Lab, 92322 Châtillon, France
4 ONERA–The French Aerospace Lab, 31410 Mauzac, France
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     title = {Application of numerical simulations to predict aircraft combustor ignition},
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Guillaume Linassier; Anne Bruyat; Philippe Villedieu; Nicolas Bertier; C. Laurent; Olivier Rouzaud; Renaud Lecourt; Hubert Verdier; Gérard Lavergne. Application of numerical simulations to predict aircraft combustor ignition. Comptes Rendus. Mécanique, Volume 341 (2013) no. 1-2, pp. 201-210. doi : 10.1016/j.crme.2012.11.009. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2012.11.009/

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