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2. CFD approach
The observations reported in the following paragraphs are largely based on the use of the FLACS and AUTOREAGAS codes. Obviously, not all CFD codes are similar to those cited here, and some observations may not apply to other codes.
2.1 Interests
The advantage of a CFD approach over the multi-energy method is obvious, since the explosion is modeled more accurately. CFD modeling enables us to take into account :
actual plant geometry ;
the characteristics of the actual flammable cloud (no longer limited to a stoichiometric hemispherical cloud);
wave compositions.
It therefore has a much broader field of application....
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CFD approach
Comparison of the two approaches
Bibliography
Software tools
AUTOREAGAS, CFX, FLUENT. ANSYS INC. Southpointe 275 Technology Drive Canonsburg, PA 15317, USA http://www.ansys.com
FLACS – FLame Acceleration Simulator. GEXCON AS Fantoftvegen 38 N-5892 Bergen, Norway http://www.gexcon.com
Regulations
Environment Code – consolidated version as of June 1, 2012
Law no. 2003-699 of 30/07/03 on the prevention of technological and natural risks and the repair of damage, JO no. 175 of 31 July 2003, NOR: DEVX0200176L
Arrêté du 29 septembre 2005 relatif à " l'évaluation et à la prise en compte de la probabilité d'occurrence, de la cinétique, de l'intensité des effets et de la gravité...
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