4. Conclusion

When considering the risk of explosion, different degrees of precision are required in modeling the effects. For some problems, defining a distance to an overpressure threshold will suffice, while for others, full characterization of the overpressure signal will be essential. Today, there are many tools available for dealing with this phenomenon. In practice, two approaches are the most widely used today: the multi-energy method and CFD methods (FLACS in particular).

From a technical point of view, CFD methods perform better overall, since they model physical phenomena more accurately. However, most of today's commercial CFD codes have limitations that can lead, among other things, to an underestimation of the effects of explosions far from the flammable cloud, which is precisely what the multi-energy method is designed to address. In fact, to date, the two methods...

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Bibliography

(1) - Van Den BERG (A.C.), MOS (A.L.) - Research to improve guidance on separation distance for the multi energy method. - UK HSE Research Report, 369 (2005).
(2) - EGGEN (J.B.) MM - GAME : development of guidance for the application of the multi-energy...

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...