Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Numerical Investigation on Multi-stage Axial Fan and Compressor for Considering Pressure Losses by Instrumentation and Area-averaged Properties

측정장치 압력손실과 면적평균 물리량 보정을 위한 다단 축류 팬과 압축기의 수치해석적 연구

  • 최재호 (한화에어로스페이스 항공우주연구소) ;
  • 김세미 (한화에어로스페이스 항공우주연구소) ;
  • 이원석 (한화에어로스페이스 항공우주연구소) ;
  • 최태우 (한화에어로스페이스 항공우주연구소) ;
  • 김진욱 (한화에어로스페이스 항공우주연구소)
  • Received : 2018.07.31
  • Accepted : 2018.08.31
  • Published : 2018.08.31
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Abstract

A numerical investigation has been conducted to find the effects of pressure losses by struts and rakes, and averaging methods on the performance of a multi-stage axial fan and a multi-stage axial compressor. Struts and rakes which produce pressure losses are installed upstream of the aerodynamic inlet plane in the fan and the compressor rigs. Some of normal stator vanes are substituted with thick vanes with total pressure probes to measure total pressure between stages. Three-dimensional Reynolds-averaged Navier- Stokes equations with $k-{\omega}$ SST turbulence model were applied to analyze the pressure losses by the struts, inlet rakes, and thick instrumented vanes. The hexahedral grids were used to construct computational domain. Inlet pressure losses were evaluated for the compressor as a function of Mach number. The passage pressure losses due to the instrumented vanes were evaluated at the two speed lines in the fan. Total properties, such as pressure and temperature, were evaluated at the exit of the fan and the compressor with two different averaging methods which are area-averaging and mass-averaging, respectively.

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References

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