Calibration of a Pebble Bed Configuration for Direct Numerical Simulation
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
G4-1 - Gas Cooled Fast Reactors and Very High Temperature Reactors; CFD Calculations

A. Shams (Nuclear Research and Consultancy Group, Petten)
F. Roelofs (Nuclear Research and Consultancy Group, Petten)
E.M.J Komen (Nuclear Research and Consultancy Group, Petten)
Emilio Baglietto (CD-adapco)


The appearance of hot spots in the pebble bed cores of High Temperature Reactors (HTR) may affect

the integrity of the pebbles. A good prediction of the flow and heat transport in such a pebble bed core

is a challenge for available turbulence models. Such models need to be validated in order to gain trust

in the simulation of these types of flow configurations. Direct Numerical Simulation (DNS) can serve

as a reference for validation, however, it poses restrictions in terms of flow parameters and numerical

tools corresponding to the available computational resources. In the present study, a wide range of

numerical simulations has been performed in order to calibrate a pebble bed configuration for DNS

which may serve as reference for validation.

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