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Abstract

The aim is to work out a three-dimensional code calculating the overpressure distribution on any structure when an air shock wave arrives, especially in the case of a geometry providing multiple waves reflection. The computer code ZEPHIR was written under the assumption that the phenomena agree with the acoustic laws. An integral formulation leads infinite three- dimensional problems to a bidimensional one on a surface S limiting the real D. The surface S is discretized with triangular elements and replaced by the polyhedron constituted by the mesh. The pressure is calculated at the barycenter of the triangular elements, with interpolation between several time steps. The ZEPHIR code has been validated at first against analytical solutions obtained for simple obstacle geometries. Tests were performed with models of PWR buildings at a scale of 1/40, a cylinder for the reactor building and a parallelepiped for the fuel building, used adjacent or separated by a gap. Plastic explosive permits to obtain the pressure - time history of a hydrocarbon explosion at that scale. The results are in good agreement with the computation. The code ZEPHIR is characterized by a relatively cheap utilization.

Additional information

Authors: BERRIAUD C, COMMISSARIAT A L'ENERGIE ATOMIQUE, INSTITUT DE RECHERCHE TECHNOLOGIQUE ET DE DEVELOPPEMENT INDUSTRIEL, PARIS (FRANCE);VERPEAUX P COMMISSARIAT A L'ENERGIE ATOMIQUE, INSTITUT DE RECHERCHE TECHNOLOGIQUE ET DE DEVELOPPEMENT INDUSTRIEL, PARIS (FRANCE), COMMISSARIAT A L'ENERGIE ATOMIQUE, INSTITUT DE RECHERCHE TECHNOLOGIQUE ET DE DEVELOPPEMENT INDUSTRIEL, PARIS (FRANCE)
Bibliographic Reference: EUR 9674 EN (1985) MF, 100 P., BFR 300 BLOW-UP COPY BFR 500, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989123055500 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en