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Numerical Simulations of MISTRA 2009 Campaign for ITER Hydrogen Explosion Mitigation Studies

[+] Author Affiliations
Jianjun Xiao

Karlsruhe Institute of Technology, Karlsruhe, Baden-Württemberg, Germany

John R. Travis

Dubois, Pitzer, Travis GmbH, Offenbach, Germany

Paper No. ICONE20-POWER2012-54650, pp. 511-518; 8 pages
  • 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference
  • Volume 4: Codes, Standards, Licensing, and Regulatory Issues; Fuel Cycle, Radioactive Waste Management and Decommissioning; Computational Fluid Dynamics (CFD) and Coupled Codes; Instrumentation and Controls; Fuels and Combustion, Materials Handling, Emissions; Advanced Energy Systems and Renewables (Wind, Solar, Geothermal); Performance Testing and Performance Test Codes
  • Anaheim, California, USA, July 30–August 3, 2012
  • Conference Sponsors: Nuclear Engineering Division, Power Division
  • ISBN: 978-0-7918-4498-4
  • Copyright © 2012 by ASME


Nitrogen injection system in the vacuum vessel (VV) was proposed to prevent hydrogen explosions during International Thermonuclear Experimental Reactor (ITER) accident scenario. In previous studies, the nitrogen injection system for the mitigation of the hydrogen explosion risk under wet bypass scenario was investigated using CFD codes, GASFLOW and CAST3M. In order to further verify the capability of the codes, experiments in large scale facility MISTRA were carried out at CEA. In this paper, two cases with and without nitrogen inerting were analyzed using two classical turbulence models in GASFLOW code. Subsequently the numerical results have been compared against the experimental results from MISTRA, showing the effect of the turbulence modelling in the prediction of gas mixing.

Copyright © 2012 by ASME



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