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Experimental and Numerical Investigation of H2-Air Deflagration in the Presence of Concentration Gradients

[+] Author Affiliations
S. Kudriakov, E. Studer

CEA-Saclay, Gif-sur-Yvette, France

M. Kuznetsov, J. Grune

Karlsruhe Institute of Technology, Ettingen, Germany

Paper No. ICONE21-16910, pp. V006T15A029; 11 pages
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 6: Beyond Design Basis Events; Student Paper Competition
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5583-6
  • Copyright © 2013 by ASME


A set of experiments performed at Karlsruhe Institute of Technology (KIT) in the framework of the LACOMECO European project is devoted to flame propagation in an obstructed large scale facility A3 (of 8 m height and 33 m3 volume) with initially vertical hydrogen concentration gradients. Almost linear positive and negative (relative to gravity) concentration gradients are created prior to ignition in the range from 4% to 13%, and the process of flame acceleration is investigated depending on hydrogen concentration gradient and ignition positions.

In this paper we describe the A3 facility and analyse the experimental data obtained during the project. The results of numerical simulation performed using Europlexus code are presented together with the critical discussions and conclusions.

Copyright © 2013 by ASME
Topics: Explosions



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