Cerfacs Enter the world of high performance ...

The 30 April 2015

PhD Defense: Damien PAULHIAC – Modeling spray combustion in an aeronautical burner

Marie LABADENS |  CERFACS, Conference room Jean-Claude André |  


The combustion of hydrocarbons still represents the major part of the worldwide production of energy, especially for aerospace. Most industrials burners are fed with liquid fuel that is directly injected in the combustion chamber, generating a strong interaction between the spray, the turbulent flow and the combustion. This interaction has been widely studied, but is not yet fully understood. In particular, modeling individual droplet combustion, in the framework of Large Eddy Simulation (LES) of complex geometries, is a difficult issue. This work aims at improving models for spray combustion, in the context of two-phase reactive LES of complex configurations using an Euler-Lagrange approach. First, a droplet combustion model accounting for the various regimes and called MustARD for « Multi-State Algorithm for Reacting Droplets » is proposed and validated on several academic configurations of growing complexity. Second, MustARD is evaluated in the LES of a lab-scale burner and compared to classical models neglecting individual droplet combustion. Results show in particular the importance of the new model and its impact on the flame structure. Moreover, the comparison with experiments shows that MustARD contributes to improve the numerical prediction of LES of two-phase reacting flows.


L. VERVISCH                        INSA Rouen                                       Referee

E. MASTORAKOS                Cambridge University                         Referee

F. GRISCH                            INSA Rouen                                        Member

M. CAZALENS                      INSA Rouen & SAFRAN Tech            Member

S. JAY                                   IFP Energies Nouvelles                       Member

S. RICHARD                         Turbomeca                                          Industrial supervisor

B. CUENOT                           CERFACS                                          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