M/W PhD position on combustion simulation.

Updated: 2 months ago
Job Type: FullTime
Deadline: 06 May 2021

The thesis will take place at CORIA (UMR 6614). https://www.coria.fr
The doctoral school is PSIME (speciality field: Energy).
The thesis being part of the ANR project PHYSSA, the collaboration with a team from the partner ICARE will lead to frequent joint meetings.
The PhD candidate will have access to the mesocentre CRIANN and to national computers from GENCI.

Subject of the thesis: Numerical simulation of Hydrogen Flame propagation

Objective: Participate to the understanding of the mechanisms at play during a flame-shock interaction in a hydrogen-air mixture.
Scientific field and scientific themes: Combustion, Modeling, Direct Numerical Simulation, Large Eddy Simulation, AI
Detailed presentation of the research project:
The decarbonization of the energy consumption in France will need to be achieved bearing in mind that this low-carbon society will need to have a secure and affordable distribution. One way to reach these goals is the use of hydrogen which is quite versatile and can be used in a large panel of applications such as power generation, energy storage as well as transportation fuel. The attractiveness of hydrogen is however overshadowed by its high sensitivity to explosions. In case of an accidental leak, hydrogen, mixed with air, will ignite very easily given its combustion properties (large flammability limits or very low minimum ignition energy). Even if a slow flame is initially ignited, depending on the confinement, it can strongly accelerate to form a detonation and cause a substantial increase in pressure loads. The latter will be responsible of damages that will affect both the materials and the people.
To be able to correctly predict the occurrence of such acceleration and transition to detonation is the key to the successful development of energy applications based on hydrogen fuel. Moreover, any assessment of the explosion risk in industrial or public sites will rely on numerical simulations that have to be trustworthy. These simulations, needed by the regulators, are the output of codes that in turn are validated using experimental data obtained in laboratory dedicated experiments. To progress in this field, two novel experimental set-ups are actually developed at ICARE (Orléans), one laminar and one turbulent. During the thesis, these two set-ups will be computed with the in-house software SiTComB (https://www.coria-cfd.fr/index.php/SiTCom-B ).
The principal objective of the thesis is to produce a numerical data base (digital twin) validated on the experimental results for an interaction between a premixed flame and a shock-wave. Both numerical and experimental data will then be used for a thorough analysis of this interaction.
Material and financial scientific conditions of the research project: The thesis is funded by ANR, project PHYSSA in collaboration with ICARE (https://icare.cnrs.fr ).
Objective of promoting the research work of the doctoral student: Scientific results will be published in journals such as Combustion and Flame, FTaC or Combustion Theory and Modelling.
Bibliographical references:
- L. Bouheraoua, P. Domingo, G. Ribert (2017), Combust. Flame (179): 199 – 218.
- O. Dounia, O. Vermorel, A. Misdariis, T. Poinsot (2019, Combust. Flame (200), 1-14.
- B. Duboc, G. Ribert, P. Domingo (2019), Computers Fluids (179): 206 – 227.
- U. Guven, G. Ribert (2018), J. Propul. Power (34,2): 291 – 307.
- A. M. Khokhlov, E. S. Oran, G. O. Thomas (1999) Combust. Flame, 117:323-339.
- G. Lodato, L. Vervisch, P. Domingo (2008), J. Comput. Phys.( 227) 5105–5143.
- C. Merlin, P. Domingo, L. Vervisch (2013) FLow Turbulence and Combustion, 90(1): 29-68.
- J.L. Ruan, P. Domingo, G. Ribert, (2020), Combust. Flame, (215): 238 – 251.
- R. Mével, J. Sabard, J. Lei, N. Chaumeix (2016). International Journal of Hydrogen Energy 41 (16), 6905-6916.
- R. Scarpa, E. Studer, S. Kudriakov, B. Cariteau, N. Chaumeix (2019), Int. J. Hydrog. Energy (44,17): 9009-9017.


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