This article presents Large Eddy Simulations (LES) of a realistic aeronautical combustor device: the chamber CTA1 designed by TURBOMECA. Under nominal operating conditions, experiments show hot spots observed on the combustor walls, in the vicinity of the injectors. These high temperature regions disappear when modifying the fuel stream equivalence ratio.
In order to account for detailed chemistry effects within LES, the numerical simulation uses the recently developed turbulent combustion model F-TACLES (Filtered TAbulated Chemistry for LES). The principle of this model is first to generate a lookup table where thermochemical variables are computed from a set of filtered laminar unstrained premixed flamelets. To model the interactions between the flame and the turbulence at the subgrid scale, a flame wrinkling analytical model is introduced and the Filtered Density Function (FDF) of the mixture fraction is modeled by a β function. Filtered thermochemical quantities are stored as a function of three coordinates: the filtered progress variable, the filtered mixture fraction and the mixture fraction subgrid scale variance. The chemical lookup table is then coupled with the LES using a mathematical formalism that ensures an accurate prediction of the flame dynamics. The numerical simulation of the CTA1 chamber with the F-TACLES turbulent combustion model reproduces fairly the temperature fields observed in experiments. In particular the influence of the fuel stream equivalence ratio on the flame position is well captured.
Pierre Auzillon 1, 2 ; Eléonore Riber 3 ; Laurent Y.M. Gicquel 3 ; Olivier Gicquel 1, 2 ; Nasser Darabiha 1, 2 ; Denis Veynante 1, 2 ; Benoît Fiorina 1, 2
@article{CRMECA_2013__341_1-2_257_0, author = {Pierre Auzillon and El\'eonore Riber and Laurent Y.M. Gicquel and Olivier Gicquel and Nasser Darabiha and Denis Veynante and Beno{\^\i}t Fiorina}, title = {Numerical investigation of a helicopter combustion chamber using {LES} and tabulated chemistry}, journal = {Comptes Rendus. M\'ecanique}, pages = {257--265}, publisher = {Elsevier}, volume = {341}, number = {1-2}, year = {2013}, doi = {10.1016/j.crme.2012.10.021}, language = {en}, }
TY - JOUR AU - Pierre Auzillon AU - Eléonore Riber AU - Laurent Y.M. Gicquel AU - Olivier Gicquel AU - Nasser Darabiha AU - Denis Veynante AU - Benoît Fiorina TI - Numerical investigation of a helicopter combustion chamber using LES and tabulated chemistry JO - Comptes Rendus. Mécanique PY - 2013 SP - 257 EP - 265 VL - 341 IS - 1-2 PB - Elsevier DO - 10.1016/j.crme.2012.10.021 LA - en ID - CRMECA_2013__341_1-2_257_0 ER -
%0 Journal Article %A Pierre Auzillon %A Eléonore Riber %A Laurent Y.M. Gicquel %A Olivier Gicquel %A Nasser Darabiha %A Denis Veynante %A Benoît Fiorina %T Numerical investigation of a helicopter combustion chamber using LES and tabulated chemistry %J Comptes Rendus. Mécanique %D 2013 %P 257-265 %V 341 %N 1-2 %I Elsevier %R 10.1016/j.crme.2012.10.021 %G en %F CRMECA_2013__341_1-2_257_0
Pierre Auzillon; Eléonore Riber; Laurent Y.M. Gicquel; Olivier Gicquel; Nasser Darabiha; Denis Veynante; Benoît Fiorina. Numerical investigation of a helicopter combustion chamber using LES and tabulated chemistry. Comptes Rendus. Mécanique, Volume 341 (2013) no. 1-2, pp. 257-265. doi : 10.1016/j.crme.2012.10.021. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2012.10.021/
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