Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Computational Flow Analysis on the Flow Field Improvement of an Indoor RAC by LES

LES에 의한 RAC 실내기의 유동장 개선에 관한 전산유동해석

  • Kim, J.K. (Department of Power System Engineering, KunSan National University) ;
  • Oh, S.H. (School of Mechanical & Automative Engineering, KunSan National University)
  • 김장권 (군산대학교 동력기계시스템공학과) ;
  • 오석형 (군산대학교 기계자동차공학부)
  • Received : 2011.06.23
  • Accepted : 2012.02.16
  • Published : 2012.06.30
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Abstract

The computational flow analysis using LES technique was introduced to investigate the flow field improvement of an indoor RAC chassis consisting of a rear-guider, a stabilizer and a cross-flow fan. This unsteady three-dimensional numerical analysis was carried out by the commercial SC/Tetra software. The edge blocks were adopted in this study as a tool for the flow field improvement of an indoor RAC. In view of the results so far achieved, the edge blocks cause the center of an eccentric vortex to be stable along all length of a cross-flow fan, and then, the static pressure and the velocity vector show a stable distributions. In consequence, because the edge blocks eliminate a reverse flow near the edges, an exhausting flow becomes to be stable and uniform.

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References

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