New developments in ALCYONE 2.0 fuel performance code
Résumé
ALCYONE is a multi-dimensional (1D, 2D or 3D) fuel performance code dedicated to pressurized water
reactors (PWR). This code is co-developed in the PLEIADES platform by the CEA, EDF and AREVA and
simulates fuel pellets and cladding evolutions during base irradiation, power ramps and accidental situations.
Sophisticated chemical and physical models are used. The thermal and mechanical behavior is solved with the finite
element method based code CAST3M.
ALCYONE 2.0 is the next release of the code and includes several new features: improvements in incidental and
accidental situations modeling, new models available for 2D and 3D schemes and an evolution of neutron model to
simulate gadolinium fuel.
ALCYONE 2.0 uses a new version of PLEIADES platform which allows the parallelized computation of rod axial
slices in order to decrease computation times.
To better simulate accidental situations, an axial transfer model for gases and a modeling of heaters for Loss Of
Coolant Accident (LOCA) experiments have been added to the code. The axial transfer model can simulate an axial
internal pressure gradient in the fuel rod.
For power ramps simulations in the 1D scheme, a new model for dish filling is available.
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