Analysis in large scale nuclear buildings

CFD is part of numerical tools used within nuclear industry to design reactors and to support their operation. The scope of CFD analysis has continuously enlarged, from pipe fragments to entire cooling circuits. AREVA NP aims now to perform CFD industrial analysis of whole plant buildings, and particularly on a PWR reactor building.

As reactor operating transients can be lengthy (several hours or days), simulating complex-building atmosphere behavior remains a challenge. AREVA NP is working to address it thanks to acceleration processes that have proved promising on the reactor-building shutdown simulation that will be presented. 

PWR-plant reactor building shelters strategic equipment such as the primary pumps, the steam generators, the reactor vessel and many other devices like valves and exchangers. These components are distributed in numerous rooms and bunkers where they may be heating, cooling or wetting their environment. The implantation of various ventilation and cooling systems is required in order to master the atmosphere pressure, temperature and humidity in all part of the reactor building.

Address the simulation of air behavior in such a building will help to improve auxiliary systems design and will help to develop more efficient strategies in operating simultaneously all these systems during the reactor life.

olivier BERNARD
Session Time Slot(s): 
06/03/2017 - 4:15pm-06/03/2017 - 4:40pm
Room II
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