Description du sujet de thèse

In order to achieve the goal of carbon neutrality by 2050 announced by Europe, the industrial sector must decarbonise. Although the electrification of processes is a sober and efficient solution given the French context of 'green' electricity, certain sectors of industry (glass, cement, steel, etc.) are based on very high-temperature processes that are currently only possible using heat from combustion.
Hydrogen, the quintessential zero-carbon fuel, raises a number of technological and scientific challenges because of the specific characteristics of this molecule compared with standard hydrocarbon fuels. Similarly, the cost of transporting and storing it means that ammonia is seen as the best carrier of hydrogen and also as a carbon-free fuel.
The idea behind the PEPR Frozen project is to study the stabilisation and performance of ammonia/air and precracked ammonia flames in the Hylon burner (developed by the IMFT for H2/air and H2/CH4/air flames), as well as the phenomena governing the stabilisation process and the impact on overall emissions.
Characterisation of the aerothermochemistry according to the mixing conditions will be carried out using various optical diagnostics (PIV, chemiluminescence, LIF, ....) with the aim of providing reliable data with the best time and space resolution for the simulation that will be carried out as part of the project.
In addition, collaboration with the EM2C laboratory and CETHIL will enable in-situ measurement of pollutant species such as NO, as well as wall transfer.

Contexte de travail

Responsibilities
To design, implement, carry out and analyse combustion tests with low-carbon fuels on a new burner as part of the PEPR SPLEEN 'Frozen' project.
Activities
- Identify the diagnostics to be carried out, depending on what is available in the laboratory, to characterise the reactive properties of ammonia/H2/air mixtures
- Taking charge of the experimental set-up and proposing modifications to it in line with the scientific objectives identified
- Drawing up the test matrix
- Contribute to the implementation / integration of new optical techniques in agreement with the other partners of the PEPR SPLEEN 'FROZEN'.
- Conduct experiments, collect and interpret results
- Synthesise / write scientific reports and articles on the results obtained
- Collaborate with researchers working on the project and other partners

Skills
Professional skills
Professional skills/know-how
- Training in combustion and fluid mechanics
- Proficiency in programming languages such as Matlab and Python.
Personal skills
- Ability to adapt to changing project requirements and willingness to contribute to collaborative research.
- Ability to work as part of a team, with limited travel to attend project meetings.

Desired educational background:
- Master's degree and/or engineering degree with experience in one of the following areas: Combustion, Mechanical Engineering
- Proven ability to work on research projects.

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.