Third meeting on MITHYGENE-ETSON hydrogen deflagration benchmark

Paris, France, 22nd and 23rd November 2017

As part of the French MITHYGENE project, active since 2013, joined by members of ETSON, the ENACCEF2 experimental device was designed and built, offering unique possibilities for studying accelerating and quenching of the flame. Some of the hydrogen combustion experiments carried out in the project will also be used as a measure (combustion benchmark) for a comparative study of the calculation codes used in safety analyzes of hydrogen combustion in nuclear power plants containments. ETSON is a European association of certified experts for nuclear (and radiation) Safety. Several working groups and committees work within the association.

At the third meeting, the partners presented and analyzed the results of simulations of the second part, where the results of the experiments were not known in advance. The results for IJS were contributed from Ivo Kljenak and Tadej Holler. The results of first were obtained using ASTEC system code, while the second acquired the results using the ANSYS Fluent CFD code.

IRSN will as the project coordinator in cooperation with its partners, issue a benchmark report on the hydrogen combustion study in the ENACCEF2 experimental facility in January 2017. Prior to this, the partners will contribute possibly improved second phase results, taking into account the known results of the experiments.

The third meeting for the MITHYGENE-ETSON combustion benchmark, which was again hosted by IRSN at its premises in Fontenay-aux-Roses on the outskirts of Paris, took place on 22 and 23 November 2017. As a representative of the Jožef Stefan Institute, Tadej Holler from the Reactor Engineering Division.