Description du sujet de thèse

Sustainable Aviation Fuels (SAF), encompassing fuels synthesized from biomass or zero-carbon electrical sources, offer a short-term solution for decarbonizing the aeronautical sector. Exhibiting main properties similar to conventional jet fuel, using SAF does not require completely redesigning current combustion chambers. However, given the diverse feedstock required to meet energy demands, SAF compositions may vary considerably. Recent studies indicate that these variations affect combustion chamber performance, influencing operability and emissions. Research engineers working on the design of future aeronautical combustion chambers are faced with new scientific challenges.
The SAFARI project aims to gain fundamental insights into SAF combustion's multi-physic phenomena and develop numerical tools for designing future combustion chambers. Scientific challenges are to understand and model the effects of pressure, heat transfer, and fuel composition variability on flame dynamics and pollutant emissions, such as NOx and soot particles.
The Ph.D aims to understand the link between SAF mixture and the emission of pollutants - soot particles and nitrogen oxides. Measurements based on advanced optical techniques, laser extinction and laser absorption spectroscopy will be carried out on the PREVAP experimental bench. This setup, specially developed for this project, will allow the control of the injection parameters and the SAF mixture in the pre-vaporized state.
Physical analysis and comparisons with multi-physics simulations carried out in parallel at the EM2C laboratory will identify the key mechanisms to derive low-order models. The research outcomes will be published in the major high-impact international journals.
The EM2C laboratory is looking for highly motivated, committed, and creative individuals, able to work in a team and with excellent communication skills. Working in a top-level research environment with advanced laboratory infrastructure, you will have a unique opportunity to develop your research abilities.
An excellent MSc or Engineering School degree are demanded in mechanical engineering, combustion, energetics, or physics. You have an appetence for experimentation and physical analysis. Ideally, you have experience and a proven track record in one or more of the following areas: combustion, laser diagnostics, fluid dynamics.

Contexte de travail

The Ph.D candidate will join a group of 10 Ph.D. students and their academic and industrial teams in the project SAFARI.
The EM2C Laboratory (CNRS/INSIS and Université Paris-Saclay/CentraleSupélec http://em2c.centralesupelec.fr/), through its high-level academic research in energy and combustion and its applied studies in partnership with the most prominent companies or research centers in the field of transport and energy, contribute significantly to the progress of knowledge on these critical issues, both for the climate and for the environment. To meet these challenges, the laboratory's research activities are organized around three axes entitled Combustion, Out-of-Equilibrium Plasmas, Transfer Physics, and a transversal action in Applied Mathematics. You will be included in the Combustion axe. As PhD student, you will be registered in the SMEMAG (SCIENCES MÉCANIQUES et ÉNERGÉTIQUES, MATÉRIAUX et GÉOSCIENCES) Doctoral school.
Chaire SAFARI : https://www.centralesupelec.fr/fr/le-programme-safari-laureat-du-programme-de-chaires-industrielles-de-lagence-nationale-de-la

Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.