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Eulerian Simulation of Interacting PWR Sprays Including Droplet Collisions

A. Foissac, J. Malet, S. Mimouni, P. Ruyer, F. Feuillebois, O. Simonin

Nuclear Technology / Volume 181 / Number 1 / January 2013 / Pages 133-143

Technical Paper / Special Issue on the 14th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-14) / Thermal Hydraulics /

A numerical simulation of the interaction between two real pressurized water reactor containment sprays is performed with a new model implemented into the Eulerian computational fluid dynamics (CFD) code NEPTUNE_CFD. The water droplet polydispersion in size has been treated with a sectional approach. The influence of collisions between droplets is taken into account with a statistical approach based on the various outcomes of binary collision. Experiments were performed in a new facility, and data obtained are compared with this two-fluid simulation. The results show good agreement.

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