The increasing needs of society in the field of reacting flows (for energy production and transport as well as for reduced pollution and increased safety) and the lack of experienced groups in numerical combustion have generated an increasing activity of combustion research at CERFACS. This includes:
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Fundamental research in combustion: flame dynamics, chemistry, interaction with walls, Direct Numerical Simulation
- Development of tools which can be applied to industrial problems: RANS (Reynolds Averaged Navier Stokes) and LES (Large Eddy Simulation) codes.
These two aspects must be balanced to fulfill the task of the team. The academic part, for example, is necessary to maintain a high level of expertise. Interestingly, funding has been found even for these fundamental aspects and multiple contracts cover such 'basic' combustion phenomena at CERFACS. These studies are described in Section 2.1. The LES of two phase flows which is the fastest growing activity in the team is described in Section 2.2 while the unsteady combustion work (in gaseous flows) is presented in Section 2.3. Finally, Section 2.4 describes the software engineering tasks needed to make all large LES studies at CERFACS possible: optimisation, parallelization, visualization, etc. Many of these tasks require intense collaboration with national computing centers such as CINES or IDRIS.
- Basic phenomena
- LES of two phase reacting flows
- Numerical Approach (J.-B. Mossa, B. Cuenot, S. Pascaud, A. Kaufmann, O. Simonin)
- Modelling aspects (B. Cuenot, E. Riber, A. Kaufmann, O. Simonin)
- Applications (S. Pascaud, J.-B. Mossa, B. Cuenot, T. Poinsot)
- LES of unsteady combustion
- Unsteady combustion studies using LES and acoustic tools (Y. Sommerer, T. Poinsot)
- Submodels used for LES at CERFACS (T. Poinsot, L. Gicquel, D. Veynante)
- Typical examples
- A small gas turbine burner (S. Roux, T. Poinsot, G. Lartigue)
- System identification of turbulent burners (K. Truffin, A. Sengissen, T. Poinsot, B. Varoquié, L. Selle)
- Acoustic tools development. Application to high-frequency modes (L. Benoit, T. Poinsot, A. Kaufmann, F. Nicoud)
- Acoustic / combustion coupling tools: the acoustic energy equation (C. Martin, T. Poinsot, F. Nicoud)
- LES of flashback in swirled burners (Y. Sommerer, T. Poinsot, J.-P. Légier, D. Galley, D. Veynante)
- Multiburner computations (G. Staffelbach, T. Poinsot)
- Prediction of pollutant formation with LES (P. Schmitt, T. Poinsot, D. Veynante, N. Dioc)
- Coupling RANS and LES for reacting flows (M. Saudreau, B. Varoquié, T. Poinsot)
- LES for high speed reacting flows (B. Varoquié, T. Poinsot, R. Knikker)
- Mixing studies (C. Prière, L. Gicquel, T. Poinsot)
- Software engineering
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