Revisiting Temporal Accuracy in Neutronics/T-H Code Coupling Using the NURESIM LWR Simulation Platform
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
D8-2 Multi-scale multi-physics couplings; Multiphysics methods for LWRs simulations

Omar Zerkak (Paul Scherrer Institut)
Ivan Gajev (Royal Institute of Technology)
Annalisa Manera (Paul Scherrer Institut)
Tomasz Kozlowski (Royal Institute of Technology)
Andre Gommlich (Helmholtz-Zentrum Dresden-Rossendorf)
Stéphanie Zimmer (Commissariat à l'Energie Atomique)
Sören Kliem (Helmholtz-Zentrum Dresden-Rossendorf)
Nicolas Crouzet (Commissariat à l'Energie Atomique)
Martin A. Zimmermann (Paul Scherrer Institut)


The first part of this paper reviews the different temporal coupling methodologies that are currently employed for the transient simulation of LWR cores. The second part shows preliminary results from the implementation of some suggested coupling improvements, including high-order corrections to the exchanged coupling fields and a dynamic time step control technique, for the simulation of an exemplary reactivity insertion transient analysed using the European NURESIM LWR simulation platform.

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