Developments in Single Phase Fuel Assembly Simulations
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
B1-1 Computational Fluid Dynamics, Mathematical Modeling and Verification/Validation/Applications

Ferry Roelofs (NRG)
Vinay R. Gopala (NRG)
Dirk Visser (NRG)
Afaque Shams (NRG)
Jan-Aiso Lycklama À Nijeholt (ECN)
Laltu Chandra (IIT Rajasthan)


The heart of every nuclear reactor is the core where the nuclear chain reaction takes place. Heat is produced in the nuclear fuel and transported to a coolant. Most core designs consist of many fuel assemblies which in turn consist of a large number of fuel rods. In most fourth generation reactor concepts (and also in pressurized water reactors), single phase heat transfer plays an important role. For the design and safety analyses of such reactors, simulations of the heat transport within the core are essential. This paper will demonstrate the single phase CFD validation approaches that have been performed by the authors focusing mainly on liquid metal and supercritical water coolants. For turbulence modeling, RANS, URANS, and LES approaches have been applied. It will be demonstrated that CFD analyses indeed support the development of improved heat transfer correlations for application in system codes.

Individual Conference-Paper Copies (Electronic Where Available):

  • For CNS members, the first 5 copies per calendar year are free, and additional copies are $10 each.
  • For non-members, the price is $25 for the first Conference-paper copy in a request, and $10 each for additional copies of papers in the same conference and in the same request.
  • Contact the CNS office to order reprints.