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Conference papers

Capacité des codes "CFD" à prédire les explosions

Abstract : Understanding explosions is traditionally regarded as a particularly difficult task due to the intricate links between combustion, the physics of moving interfaces (flames), " transient and compressible " fluid mechanics... and computer simulation is often seen as a reasonable route to solve the underlying complex equations. This path has been followed since the last 30 years. Today, a few (" CFD ") codes exist in this domain, some being accessible for industrial use (FLUENT, FLACS, AUTOREAGAS). A few benchmarking exercises were performed so far (some in relationship to experimental results) showing scattered performances and suggesting that the sources of error are not fully tackled and that predictivity is still outstanding. This situation has been lasting for already a long time (20 years) and major national institutes (like HSL in UK and even INERIS in France) suggest that present CFD (industrial) codes may not be the more adapted to predicting explosion safety issues. This is damageable since it is certainly not good not to use the potential advantages offered by the vast domain of " numerical " fluid dynamics. A brief description of those CFD codes available for simulating explosion in the industry is given hereafter together with the results of some benchmarking exercises. A few lessons can be derived which suggest a thorough mathematical and phenomenological analysis is required to define domains of validity and best practices.
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Submitted on : Wednesday, April 2, 2014 - 3:58:33 PM
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  • HAL Id : ineris-00970899, version 1
  • INERIS : EN-2011-375



Christophe Proust, Habib Kone, Steven Kerampran, Jérôme Daubech. Capacité des codes "CFD" à prédire les explosions. 13. Congrès de la Société Française de Génie des Procédés "Des procédés au service du produit au coeur de l'Europe" (SFGP 2011), Nov 2011, Lille, France. pp.NC. ⟨ineris-00970899⟩



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