DEVELOPMENT OF A CFD BASED ANALYTICAL MODEL FOR THE PASSIVE CATALYTIC RECOMBINERS FOR HYDROGEN MITIGATION IN INDIAN NUCLEAR POWER PLANTS

摘要

Release of hydrogen as a consequence of severe accident in a nuclear power plant can be a potential threat to the integrity of the containment building. The use of passive catalytic recombiners is one of the best known options being considered for hydrogen management in nuclear power plants (NPPs). The modelling of recombiners using CFD tools is being attempted worldwide. The objective of the present study is to build and validate a 3-D analytical model for the passive recombiner using the governing mass, momentum, energy and species conservation equations from first principles. CFD code FLUIDYN-MP has been used to setup the governing equations for modelling of the associated multi-physics phenomena. The present paper brings out the salient features of the analytical model of the passive recombiner incorporated in the CFD code FLUIDYN-MP and its validation against test data from open literature.