PhD defense - G. Albouze
Large Eddy Simulation of non-premixed reactive flows
Delivered by INP Toulouse
Speciality: Energy and transfer
May 12, 2009 - CERFACS
Abstract
Large Eddy Simulation (LES) is considered as the next generation tool for the development of turbo-machinery combustion chambers. In this specific context, reactive flows are of very complex nature and, as a validation goal, LES needs to prove its capabilities on academic configurations. This dissertation aims at demonstrating LES capabilities for the simulation of non-premixed reactive flows that can be found in swirled academic combustion chambers.
- LES is first applied to a turbulent reacting configuration with a perfect premixing assumption. Chemical kinetics, turbulent combustion models and their internal parameters are studied. For this flow condition, each model shows his advantages and disadvantages.
- Then, the perfect premixed hypothesis is removed, allowing the evaluation of mixing, thermal losses and acoustic boundary conditions for this swirled injector.
- Finally, a non premixed combustion chamber is simulated with the dynamically thickened flame model, which was not developped for this kind of reactive flow. However, results are encouraging and demonstrate that the flame localisation is well represented by LES.
Jury
| D. Veynante | Senior researcher - ECP, Châtenay-Malabry | Referee |
| P. Bruel | Researcher - UPPA, Pau | Referee |
| N. Darabiha | Professor - ECP, Châtenay-Malabry | Member |
| P. Comte | Professor - LEA-CEAT, Poitiers | Member |
| O. Colin | Doctor - IFP, Rueil-Malmaison | Member |
| J.F. Rideau | Engineer - MICROTURBO, Toulouse | Member |
| E. Dufour | Doctor - MBDA, Le Plessis-Robinson | Invited member |
| L. Gicquel | Senior researcher - CERFACS, Toulouse | Co-advisor |
| T. Poinsot | Senior researcher - IMFT, Toulouse | Advisor |
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