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