Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Large Eddy Simulation on the Aerodynamic Performance of Three-Dimensional Small-Size Axial Fan with the Different Depth of Bellmouth

벨마우스 깊이가 다른 3차원 소형축류홴의 공력특성에 대한 대규모 와 모사

  • Kim, Jang-Kweon (Department of Power System Engineering, Kunsan National University) ;
  • Oh, Seok-Hyung (School of Mechanical Engineering, Kunsan National University)
  • 김장권 (군산대학교 동력기계시스템공학과) ;
  • 오석형 (군산대학교 기계공학부)
  • Received : 2015.07.14
  • Accepted : 2015.10.28
  • Published : 2015.12.31
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Abstract

The unsteady-state, incompressible and three-dimensional large eddy simulation(LES) was carried out to analyze the aerodynamic performance of three-dimensional small-size axial fan(SSAF) with the different depth of bellmouth. The static pressure coefficients analyzed by LES predict a little bit larger than measurements except stall region regardless of the installation depth between SSAF and bellmouth. Moreover, static pressure efficiencies analyzed by LES show about maximum 30% at the actual operating point ranges, but measurements do not. Therefore, if the blades of conventional SSAF have some more rigidity and complete dynamic balance, the aerodynamic performance of SSAF will be some more improved. In consequence, LES shows the best prediction performance in comparison with any other Reynolds averaged Navier-Stokes(RANS) method.

Keywords

References

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