한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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서지성능 향상을 위한 원심압축기의 Bleed Slot Casing의 설계변수에 대한 해석 및 시험 평가

Numerical and Experimental Study on the Surge Performance Improvement by the Bleed Slot Casing of a Centrifugal Compressor

  • 김홍원 ((주)현대중공업 엔진기계연구소 울산대학교 자동차선박대학원 기계자동차공학과) ;
  • 정재훈 ((주)현대중공업 엔진기계연구소) ;
  • 류승협 ((주)현대중공업 엔진기계연구소) ;
  • 이근식 (울산대학교 기계공학부)
  • Kim, Hong-Won (University of Ulsan, Institute of e-Vehicle Technology. Department of Mechanical and Automotive Engineering) ;
  • Chung, Jae-Hoon (Hyundai Heavy Industries, Engine & Machinery Research Institute) ;
  • Ryu, Seung-Hyup (Hyundai Heavy Industries, Engine & Machinery Research Institute) ;
  • Lee, Geun Sik (University of Ulsan, School of Mechanical Engineering)
  • 투고 : 2014.06.11
  • 심사 : 2015.02.26
  • 발행 : 2015.04.01
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초록

The primary design goal of a compressor is focused on improving efficiency. Secondary objective is to widen the operating range of compressor. This paper presents a numerical and experimental investigation of the influence of the bleed slot on the operating range for the 1.2 MW class centrifugal compressor installed in a turbocharger. The main design parameters of the bleed slot casing are upstream slot position, inlet pipe slope, downstream slot position and width. The DOE(design of experiment) method was carried out to optimize the casing design. Numerical analyses were done by the commercial code ANSYS-CFX based on the three dimensional Reynolds-averaged Navier-Stokes equations. Results showed that efficiency and pressure ratio increased as the downstream slot position and width were smaller and the upstream position was located away from the impeller inlet. Experimental works were also done with and without the bleed slot casing. The simulation results were in good agreement with the test data. Enhancement of both the surge margin up to 26.5% and the pressure ratio with the optimized bleed slot design were achieved, compared with the surge margin of only 6.6% without the bleed slot casing.

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참고문헌

  1. Sakaguchi, Daisaku, and Nagoshi., 2010, "Effect of Guide Vane in Ring Groove Arrangement for a Small Turbocharger," AIP Conference Proceedings, 1225, pp. 47-54.
  2. Hunziker, R., Dickmann, H-P, and Emmrich, R., 2001, "Numerical and experimental investigation of a Centrifugal Compressor with an Inducer Casing Bleed System," IMechE 2001, A02901.
  3. Park, C. Y., Choi, Y. S., Lee, K. Y. and Yoon, J. Y., 2011, "Numerical Investigation of Ring Groove Effect in a Centrifugal Compressor," Vol. 14, No. 2, KFMA.
  4. Park, C. Y., Choi, Y. S., Lee, K. Y. and Yoon, J. Y., 2012, "Numerical Study on the Range Enhancement of a Centrifugal Compressor with a Ring Groove Effect," Vol. 26, No. 5, JMST.
  5. Tamaki, H., Nakao, H. and Aizawa, T., 2003, "Experimental Study on Surge Inception in a Centrifugal Compressor," The 7th AICFM, No. 50021.
  6. Tamaki, H., Unno, M., Kawakubo, T. and Hirata, Y., 2010, "Aerodynamic Design of Centrifugal Compressor for AT14 Turbocharger", Vol. 43, No. 2, IHI Engineering Review.
  7. ASME PTC 10-1997, "Performance Test Code on Compressors and Exhausters".

피인용 문헌

  1. Ported shroud design of a compressor for the hydrogen reciprocating engine of a high-altitude unmanned aerial vehicle vol.33, pp.5, 2015, https://doi.org/10.1007/s12206-019-0414-y