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Integrated System CFD Modelling of the Flow Distribution Within a Pebble Bed Modular Reactor

[+] Author Affiliations
T. H. Huang

Pebble Bed Modular Reactor (Pty) Ltd., Gauteng, South Africa

Paper No. ICONE16-48095, pp. 87-93; 7 pages
  • 16th International Conference on Nuclear Engineering
  • Volume 3: Thermal Hydraulics; Instrumentation and Controls
  • Orlando, Florida, USA, May 11–15, 2008
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4816-7 | eISBN: 0-7918-3820-X
  • Copyright © 2008 by Pebble Bed Modular Reactor (Pty) Ltd.


The complex hydrodynamic phenomena of a Pebble Bed Modular Reactor (PBMR) are partly attributed to interconnecting flow paths. Modelling the hydrodynamic phenomena provides insight to the reactor over a wide range of operating conditions. The Systems Computational Fluid Dynamics (SCFD) approach combines the advantage of conventional Computational Fluid Dynamics (CFD) modelling in simulating the detailed flow interaction to the more robust solver applied in Flownex thermal-hydraulics software. Although this approach is inherently geometry-dependent, its application in a large network or complex model has seen a reduction in computational speed compared to the conventional CFD modelling approach, without compromising the integrity of the result. This expedites the design-analysis cycle and allows testing of a combination of design changes.

Copyright © 2008 by Pebble Bed Modular Reactor (Pty) Ltd.



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