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Hydrogen based systems
Hydrogen based systems
- Advantages of H2
Green vector with no CO2 emission
High energy capacity storage
Wide range of applications (cars, forklifts, fuel cells, etc)
- Challenges and risks
H2/air mixture is highly flammable and dangerous (with volume fraction of 4-75%)
Transparent flame not easy to detect by eye
Can lead to explosions in confined/semi-confined media
Research activity
Research activity
- Numerical modelling of frequent H2 accidental scenarios
Moderate H2 leakage in ventilated cavities
Buoyant jet configurations with a Richardson number to the order of unity
Large Eddy Simulations (LES) and Direct Numerical Simulations (DNS) approaches
Effect of the natural ventilation on the H2 accumulation
Influence of the natural inlet/outlet boundary conditions
- Contributions
Comparisons versus experimental measurements are provided (CEA and/or Air Liquide)
Comparisons versus the 1D industrial model of Linden show the importance of CFD in this domain
Reference DNS data are obtained in different typical fuel cell configurations
Collaborators
Collaborators
- CEA
Gilles Bernard-Michel, Pierre Ledac, Adrien Bruneton, Anida Khizar, Christophe Bourcier, Erwan Adam
- LIMSI CNRS
Anne Sergent, Christian Tenaud, Yanshu Wang, Patrick Le Quéré
- Air Liquide
Deborah Houssin-Agbomson
HPC LES calculation
HPC LES calculation
TRUST-TrioCFD, 250M cells
5376 MPI procs, IRENE ROME cluster of CCRT, France
1 m³ GAMELAN cavity with two vents
WALE LES Sub-Grid Scale model
Vorticity magnitude
Velocity magnitude
Density gradient (horizontal component)
HPC DNS calculation
HPC DNS calculation
TRUST, 2 billion cells
50000 MPI procs, IRENE ROME cluster of CCRT, France
1 m³ GAMELAN cavity with two vents
Velocity magnitude iso-contours in a vertical mid-plane
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