Thermo-hydraulic characteristics of hybrid mixing vanes in a 17×17 nuclear rod bundle

Cheol Min Lee, Jeong Soo An, Young Don Choi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The lateral flow in the sub-channel of a nuclear rod bundle increase turbulent mixing and enhance heat transfer rate and safety. Various types of mixing vanes have been investigated to produce more lateral flow. In this study, the thermal-hydraulic characteristics of Hybrid mixing vane in a 17×17 rod bundle were calculated. Hybrid mixing vane has bended root part and split stem part. The computation was performed using a supercomputer due to the high number of grid meshes. The characteristics of Hybrid mixing vane were compared to Split mixing vane. The Hybrid mixing vane showed higher values of secondary intensity, cross-sectional turbulence intensity and Nu number and lower values of maximum temperature and standard deviation of temperature. Meanwhile, The Hybrid mixing vane has higher invariance because small vortexes travel, stretch and are connected with main stream.

Original languageEnglish
Pages (from-to)1263-1270
Number of pages8
JournalJournal of Mechanical Science and Technology
Volume21
Issue number8
DOIs
Publication statusPublished - 2007 Aug

Keywords

  • Hybrid mixing vane
  • Nuclear fuel rod bundle
  • Split mixing vane
  • Subchannel

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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