General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-25-0165
Thesis topic details
Category
Engineering science
Thesis topics
Head-on Reflections of High-Speed Combustion Waves: Experimental and Numerical Investigation and Mitigation Measures.
Contract
Thèse
Job description
This thesis focuses on the analysis of hydrogen safety in industries, particularly in cases of accidents where hydrogen is released or generated, such as in nuclear power plants. The interest in hydrogen safety has increased with the use of fuel cells for mobility. In compartmentalized buildings, flammable atmospheres can form, leading to explosions that compromise safety. Flame dynamics are influenced by boundary conditions, especially confined geometries that accelerate the flames. This phenomenon can result in a deflagration-to-detonation transition, causing significant damage to structures through shock waves and combustion waves. Research shows that certain geometric configurations and hydrogen mixtures produce higher pressures, even with low hydrogen concentrations. Three key questions are raised: the influence of geometry on pressure and impulse, the optimal hydrogen concentration, and the possibility of mitigating these effects with sound-absorbing coatings. To answer these questions, experiments and simulations will be conducted to understand and model these phenomena, providing practical tools for safety engineers.
University / doctoral school
Thesis topic location
Site
Saclay
Requester
Position start date
01/09/2025
Person to be contacted by the applicant
KUDRIAKOV Sergey
sergey.kudriakov@cea.fr
CEA
DES/DM2S/STMF/LIEFT
CEA/Saclay
DES/ISAS/DM2S/STMF/LATF
BAT. 460
Gif-sur-Yvette CEDEX
0169085285
Tutor / Responsible thesis director
Vicquelin Ronan
ronan.vicquelin@centralesupelec.fr
CentraleSupélec
Laboratoire EM2C (CNRS)
Laboratoire EM2C - CNRS
CentraleSupelec - Bat. Eiffel
8-10, rue Joliot Curie
91192 Gif-sur-Yvette cedex
+33 (0)1 75 31 60 90
En savoir plus
https://www.researchgate.net/profile/Sergey-Kudriakov