Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Numerical simulation and experimental study of quasi-periodic large-scale vortex structures in rod bundle lattices

  • Yi Liao (College of Nuclear Science and Technology, Naval University of Engineering) ;
  • Songyang Ma (College of Nuclear Science and Technology, Naval University of Engineering) ;
  • Hongguang Xiao (College of Nuclear Science and Technology, Naval University of Engineering) ;
  • Wenzhen Chen (College of Nuclear Science and Technology, Naval University of Engineering) ;
  • Kehan Ouyang (The Security Assessment and Support Office of Naval Staff Department) ;
  • Zehua Guo (School of Nuclear Science and Technology, Harbin Engineering University) ;
  • Lele Song (School of Nuclear Science and Technology, Harbin Engineering University)
  • Received : 2023.02.20
  • Accepted : 2023.10.12
  • Published : 2024.02.25
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Abstract

Study of flow behavior within rod bundles has been an active topic. Surface modification technologies are important parts of the design of the fourth generation reactor, which can increase the strength of the secondary flow within the rod bundle lattices. Quasi-periodic large-scale vortex structure (QLVS) is introduced by arranging micro ribs on the surface of rod bundles, which enhanced the scale of the secondary flow between the rod bundle lattices. Using computational fluid dynamics (CFD) and water experiments, the flow field distribution and drag coefficient of the rod-bundle lattices are studied. The secondary flow between the micro-ribbed rod-bundle lattice is significantly enhanced compared to the standard rod-bundle lattice. The numerical simulation results agree well with the experimental results.

Keywords

Acknowledgement

This research is supported by the National Natural Science Foundation of China (No. 12102474) and Major Project (No. 2023-JCJQ-ZD-131-00).

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