Simulation of the Combustion Chamber of an H2-O2 Thermal Recombiner

Abstract

Thermal recombiners are installed in many nuclear power plants to prevent late hydrogen deflagrations during a design basis accident (DBA); experimental tests guarantee DBA operation. A code has been made to simulate the steady-state operation of the FIAT recombiner. The recombining rate, calculated with the code for a gas mixture typical of severe accidents. is higher than the highest value obtained in the DBA. experimental tests. This result is encouraging for the use of thermal recombiners even in severe accidents, but the recombiner capability and stability should be verified through experimental tests.