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Conference Papers Year : 2005

The usefulness of phenomenological tools to simulate the consequences of dust explosions. The experience of EFFEX

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Abstract

Some accidents, such as the explosion of the silo in Blaye in August 1997, remind us that explosions of combustible dusts can have serious consequences, not only for the industrial installations concerned but also for the environment. The necessity of being able to estimate the effects of an explosion of this type became apparent at the beginning of the 1990s. Owing to the complexity of this subject which involves the mechanical resistance of structures, flame propagation and fluid mechanics, etc., a simulation tool clearly had to be developed having the capacity to address all these issues at once. It was in these circumstances that the development EFFEX began. EFFEX is not a CFD code but a set of interacting phenomenological models (differential equations). It is made up of a set of eight modules covering the characterisation of the explosion conditions, the estimation of the mechanical behaviour of the contaminent and the evaluation of the consequences. Comparison of the results for each of the main modules shows satisfactory consistency with available experimental results. Trials using EFFEX to simulate past accidents, including the transmission and reinforcement of the explosion between subsequent volumes, in order to verify the satisfactory linking of the various modules gave results that were similar to the actual consequences. Several tens of calculation were made so far on silo type of equipments and a synthesis is proposed in addition to a general description of the software.
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ineris-00970031 , version 1 (02-04-2014)

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Christophe Proust. The usefulness of phenomenological tools to simulate the consequences of dust explosions. The experience of EFFEX. International ESMG Symposium "Process safety and industrial explosion protection", Oct 2005, Nuremberg, Germany. pp.NC. ⟨ineris-00970031⟩

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