한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제31권4호
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  • Pages.387-394
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  • 2020
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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2.5 kW 급 프로펠러형 마이크로 수차 매개변수 연구

Parametric Study of 2.5 kW Class Propeller Type Micro Hydraulic Turbine

  • 마상범 (한국생산기술연구원 청정에너지시스템연구부문) ;
  • 김성 (한국생산기술연구원 청정에너지시스템연구부문) ;
  • 최영석 (한국생산기술연구원 청정에너지시스템연구부문) ;
  • 차동안 (한국생산기술연구원 청정에너지시스템연구부문) ;
  • 김진혁 (한국생산기술연구원 청정에너지시스템연구부문)
  • MA, SANG-BUM (Clean Energy R&D Department, Korea Institute of Industrial Technology) ;
  • KIM, SUNG (Clean Energy R&D Department, Korea Institute of Industrial Technology) ;
  • CHOI, YOUNG-SEOK (Clean Energy R&D Department, Korea Institute of Industrial Technology) ;
  • CHA, DONG-AN (Clean Energy R&D Department, Korea Institute of Industrial Technology) ;
  • KIM, JIN-HYUK (Clean Energy R&D Department, Korea Institute of Industrial Technology)
  • 투고 : 2020.06.01
  • 심사 : 2020.08.30
  • 발행 : 2020.08.30
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초록

A parametric study of a 2.5 kW class propeller type micro hydraulic turbine was performed. In order to analyze the internal flow characteristics in the hydraulic turbine, three dimensional Reynolds-averaged Navier-Stokes equations with shear stress transport turbulence model were used and the hexahedral grid system was used to construct computational domain. To secure the reliability of the numerical analysis, the grid dependency test was performed using the grid convergence index method based on the Richardson extrapolation, and the grid dependency was removed when about 1.7 million nodes were used. For the parametric study, the axial distance at shroud span (L) between the inlet guide vane and the runner, and the inlet and outlet blade angles (β1, β2) of the runner were selected as the geometric parameters. The inlet and outlet angles of the runner were defined in the 3 spans from the hub to tip, and a total of 7 geometric parameters were investigated. It was confirmed that the outlet angles of the runner had the most sensitive effect on the power and efficiency of the micro hydraulic turbine.

키워드

참고문헌

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