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DOI QR Code

선회 형태 혼합날개가 장착된 연료집합체 내부유동 분포 수치해석

Numerical Analysis for Flow Distribution inside a Fuel Assembly with Swirl-type Mixing Vanes

  • 이공희 (한국원자력안전기술원 원자력안전연구실) ;
  • 신안동 (한국원자력안전기술원 원자력안전연구실) ;
  • 정애주 (한국원자력안전기술원 원자력안전연구실)
  • Lee, Gonghee (Nuclear Safety Research Department, Korea Institute of Nuclear Safety) ;
  • Shin, Andong (Nuclear Safety Research Department, Korea Institute of Nuclear Safety) ;
  • Cheong, Aeju (Nuclear Safety Research Department, Korea Institute of Nuclear Safety)
  • 투고 : 2016.03.10
  • 심사 : 2016.04.08
  • 발행 : 2016.05.10

초록

As a turbulence-enhancing device, a mixing vane installed at a spacer grid of the fuel assembly plays a role in improving the convective heat transfer by generating either swirl flow in the subchannels or cross flow between fuel rod gaps. Therefore, both configuration and arrangement pattern of a mixing vane are important factors that determine the performance of a mixing vane. In this study, in order to examine the flow distribution features inside $5{\times}5$ fuel assembly with swirl-type mixing vanes used in benchmark calculation of OECD/NEA, simulations were conducted with commercial CFD software ANSYS CFX R.14. Predicted results were compared to data measured from MATiS-H (Measurement and Analysis of Turbulent Mixing in Subchannels-Horizontal) test facility. In addition, the effect of swirl-type mixing vanes on flow pattern inside the fuel assembly was described.

키워드

참고문헌

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