The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Performance Test and Aerodynamic Design on the High Pressure Ratio Centrifugal Compressor of a Turbocharger

과급기의 고압력비 원심압축기 공력설계 및 시험평가

  • Kim, Hong-Won (University of Ulsan, Institute of e-Vehicle Technology. School of Mechanical and Automotive Engineering) ;
  • Ryu, Seung-Hyup (Hyundai Heavy Industries, Engine & Machinery Research Institute) ;
  • Lee, Geun-Sik (University of Ulsan, School of Mechanical Engineering)
  • 김홍원 ((주)현대중공업 엔진기계연구소, 울산대학교 자동차선박대학원 기계자동차공학과) ;
  • 류승협 ((주)현대중공업 엔진기계연구소) ;
  • 이근식 (울산대학교 기계공학부)
  • Received : 2014.02.21
  • Accepted : 2014.11.12
  • Published : 2014.12.01
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Abstract

It is necessary to design a compressor with high pressure ratio that satisfies the IMO(international maritime organization) NOx emission regulation for the marine diesel engine. Impeller was designed using the modified slip factor with the flow coefficient. The main purpose of this study is to investigate the sensitivity of the compressor performance by the vaned diffuser geometries. The first vaned diffuser type was based on a NACA airfoil, the second was channel diffuser, and the third was conformally transformated configuration of a NACA65(4A10)06 airfoil. The sensitivity of the performance was calculated using a commercial CFD program for three different diffuser geometries. The channel diffuser showed the wide range of operation and higher pressure characteristics, comparing with the others. This is attributed to the flow stability at diffuser. Combined with this results with impeller design, the optimized compressor was designed and verified by the test results.

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References

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  3. H. W. Kim, J. I. Park, S. H. Ryu, S. W. Choi and S. H. Ghal, 2009, "The Performance Evaluation of Variations Diffuser Geometry of the Centrifugal Compressor in a Marine Engine(70 MW) Turbocharger," Journal of Engineering for Gas Turbine and Power, Vol. 131, No. 1, 012201. https://doi.org/10.1115/1.2967733
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