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Large Eddy Simulation of the shear flow instability in a rod-bundle assembly

  • E. Séverac and J. Fröhlich
Published/Copyright: August 22, 2013
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Abstract

The paper presents a Large Eddy Simulation at high Reynolds number of a section of a sub-channel in a fuel rod-bundle assembly of square pattern inside a pressurized water reactor. The focus is on the instability generated by the geometry of the sub-channel.

Kurzfassung

Der Beitrag präsentiert eine Large Eddy Simulation bei hoher Reynolds-Zahl für einen Unterkanalsabschnitt in einem Brennstabbündel eines Druckwasserreacktors mit quadratischer Anordnung. Der Fokus liegt auf der Strömungsinstabilität, die durch die Geometrie des Unterkanals erzeugt wird.

References

1 Meyer, L.: From discovery to recognition of periodic large scale vortices in rod bundles as source of natural mixing between subchannels-a review. Nucl. Eng. Design240 (2010) 1575Search in Google Scholar

2 Krepper, E.; Končar, B.; Egorov, Y.: CFD modelling of subcooled bloiling. Concept, validation and application to fuel assembly design. Nuc. Eng. Design237 (2007) 716Search in Google Scholar

3 OECD/NEA benchmark based on NUPEC PWR sub-channel and bundle tests (PSBT)-vol. 1. INES/SAE-TH08-0019 (2008)Search in Google Scholar

4 Hinterberger, C.; Fröhlich, J.; RodiW.: Threedimensional and depth-averaged Large-Eddy Simulations of some shallow water flows. J. Hydraul. Eng.133 (2007) 857Search in Google Scholar

5 Ikeno, T.; Kajishima, T.: Analysis of dynamical flow structure in a square arrayed rod bundle. Nucl. Eng. Des.240 (2010) 305312Search in Google Scholar

6 Rowe, D. S.: Measurement of turbulent velocity, intensity and scale in rod bundle flow channels. PhD. Thesis, Oregon State University, BNWL-1736, Battelle Pacific Northwest Laboratories, Richland, Washington, 197310.2172/4480241Search in Google Scholar

Received: 2012-10-18
Published Online: 2013-08-22
Published in Print: 2013-03-19

© 2013, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Summaries/Kurzfassungen
  4. Summaries
  5. Editorial
  6. Actual status of the research alliances “Condensation Induced Water Hammer” and “Boiling processes in Pressurized Water Reactors”
  7. Technical Contributions/Fachbeiträge
  8. High-resolution two-phase flow measurement techniques for the generation of experimental data for CFD code qualification
  9. Condensation induced water hammer (CIWH) – relevance in the nuclear industry and state of science and technology
  10. Experiments of condensation-induced water hammers at the UniBw Munich
  11. Development of a 1 D hybrid HTC model using CFD simulations for the analysis of direct contact condensation as the driving force for water hammers
  12. 1D Models for Condensation Induced Water Hammer in Pipelines
  13. Modelling, simulation and experiments on boiling processes in pressurized water reactors
  14. CFD analysis of a void distribution benchmark in a rod bundle
  15. CFD-modelling of subcooled boiling
  16. On the pair correlation function in a bubble swarm
  17. Large Eddy Simulation of the shear flow instability in a rod-bundle assembly
  18. Small scale boiling experiments using two-dimensional imaging with high-speed camera and optical coherence tomography
  19. Validation of mechanistic CHF models using optical measuring techniques
  20. Experimental investigations of single and two-phase flow in a heated rod bundle
  21. CFD-Modeling of turbulent flows in rod bundle and comparison to experiments
  22. About the change in boiling behaviour of water with coolant additives in PWR
  23. Simulation of external reactor vessel cooling in a lumped-parameter code
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