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The 28 May 2019 at 14h00

PhD defense – Felix COLLIN BASTIANI : “Modeling and Large-Eddy Simulations of Two-Phase Ignition in Gas Turbines”

Marie LABADENS |  CERFACS, Toulouse (France) conference room J.-C. André |  


In order to meet the new international environmental regulations while maintaining a strong economic competitiveness, innovative technologies of aeronautical combustion chambers are developed. These technologies must guarantee fast relight in case of extinction, which is one of the most critical and complex aspects of engine design. Control of this phase involves a thorough understanding of the physical phenomena involved.
In this thesis the full two-phase ignition sequence of an aeronautical engine has been studied, from the breakdown of the spark plug to the propagation of the flame in the complete engine. For this purpose, Large-Eddy Simulations (LES) using a detailed description of the liquid phase (Euler-Lagrange formalism) and of the combustion process (Analytically Reduced Chemistry) were performed. The results also led to the development of a simplified model for the prediction of ignition probability map, which is particularly useful for the design of combustion chambers.


Benoit FIORINAProfessor, EM2C, CentralSupelec,  Gif-sur-Yvette (France)Referee
Epaminondas MASTORAKOSProfessor, University of Cambridge (United Kingdom)Referee
Corine LACOURLecturer, CORIA, INSA Rouen (France)Member
Marc BELLENOUEProfessor, Pprime, ENSMA Poitiers (France)Member
Bruno RENOUProfessor, CORIA, INSA Rouen (France)Member
Alain CAYREExpert in combustion, Safran Aircraft Engines, Magny-les-Hameaux (France)Invited member
Bénédicte CUENOTProject Leader, CERFACS, Toulouse (France)Advisor
Eléonore RIBERSenior researcher, CERFACS, Toulouse (France)Co advisor


Thierry Poinsot officially entered the French Academy of Sciences

CERFACS |  8 November 2021

Thierry Poinsot officially entered the French Academy of Sciences on October 12. See presentation here :Read more

The AVBP code from CERFACS at the heart of for PRACE projects from the 23rd call

CERFACS |  30 September 2021

Cerfacs is involved in three PRACE projects of the 23rd call for which hour allocation runs from 01/10/2021 to 30/09/2022. Researchers from ECL/LMFA UMR5509 (Ecole Centrale de Lyon) and IMFT (UMR 5502) laboratories have earned projects entirely based on the use of the LES solver developed by Cerfacs AVBP and involve the support of experts from the CFD and COOP teams underling the importance and effectiveness of collaborations between French labs and Cerfacs. Alexis Giauque from ECL/LMFA UMR5509 (Ecole Centrale de Lyon) has obtained not only one but two PRACE projects! The first project LESFAN (RA0101, 30 000 000 CPU hours on Irene/Rome TGCC) is based on the use of AVBP in the turbomachinery version to study the generation of noise by a fan of a real airplane engine. The second, PRACE-EDGES (RA0101, 40 000 000 CPU hours on Irene/Rome TGCC) focuses on LES modeling of dens gas in complex geometries. To do so, the LMFA Team has developed advanced thermodynamic closures in AVBP allowing the direct simulation of such flows. Laurent Selle from IMFT (UMR 5502) has received CPU hours for the GASTON project (RA0061, 30 000 000 CPU hours on Marenostrum BSC) which aims to study the structure of hydrogen flames in porous materials. For this, IMFT and Cerfacs will perform coupled simulations considering the reactive flow with AVBP as well as the conduction in the porous medium with AVTP which is known to play an central role in the flame stabilization process. Carlos Perez Arroyo from IMFT (UMR 5502) received 16 Mh CPU hours on Joliot-Curie Skylake partition to support his project WONDER.Read more