Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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MULTI STAGE SHAPE OPTIMIZATION OF CENTRIFUGAL FAN FOR HOME APPLIANCE USING CFD

전산유체역학을 활용한 가전 제품용 원심팬 블레이드의 단계별 형상 최적화

  • Kim, J.S. (Department of Aerospace Mechanical Engineering, Graduate school, Korea Aerospace University) ;
  • Kang, T.G. (School of Aerospace Mechanical Engineering, Korea Aerospace University)
  • 김종수 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 강태곤 (한국항공대학교 항공우주 및 기계공학부)
  • Received : 2016.06.08
  • Accepted : 2016.09.12
  • Published : 2016.09.30
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Abstract

We conducted a multi-stage optimization to secure the desired performance of a centrifugal fan for home appliance in an early stage of product development. In optimization, the static pressure at the outlet of the fan is chosen as an objective function that is to be maximized, providing the required flow rate at the operating point of the fan. The optimization procedure begins with parameters for an initial baseline fan design. The baseline design is optimized by using a commercial optimization package. Accordingly, the corresponding blade models with a set of geometrical parameters are generated. Flow through a fan is simulated by solving the Reynolds-averaged Navier-Stokes equations. A multi-stage optimization scheme is employed to determine the family of optimum values for the parameters, leading to the pressure increase at the outlet of the fan. To validate the numerically obtained optimal design parameters, we fabricated the three types of fans using rapid prototyping and assessed the performance using a fan tester. Experimental results show that the design parameters at each stage satisfy the goal of optimization. The multi-stage optimization process turned out to be a useful tool in the development of a centrifugal fan.

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References

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