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Propagation of hydrogen flames for safety applications – PHYSSA

Submission summary

One of the major issues facing our modern societies concerns both the reduction of our impact on the climate change and the reduction of our consumption of fossil fuels. 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 such a process of transition from deflagration to detonation the understanding of the flame / shock interactions appears as a key point to a successful design of energy application based on hydrogen fuel. In this context, the objective of the project PHYSSA is to study the interaction of an hydrogen flame with a shockwave through well-controlled experiments coupled with numerical simulations.
Two experimental set-ups will be considered to study the first stages of the interaction of a flame and a shockwave (FSI): a shock tube in which a well-defined plane incident shock will encounter a flame coming from the opposite side of the tube and a shock tube coupled to a spherical bomb, the bow shock will then be transmitted to the bomb in which a spherical flame will be expending in a turbulent medium of very well-known characteristics.
Numerical simulations of the two experimental set-up will also be performed using Direct Numerical Simulation and Large Eddy Simulation methods. The data package obtained from both experimental and numerical approaches will be exploited to gather very detailed knowledge about the mechanisms at play in the FSI and also to developed an approach based on Artificial Intelligence to reconstruct information from 2D experimental imaging.

Project coordination


The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.


CNRS - ICARE CNRS - Institut de combustion, aérothermique,réactivité et environnement

Help of the ANR 534,168 euros
Beginning and duration of the scientific project: December 2020 - 48 Months

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