skip to contents

Archive

  • Title(Kor)
    2.5 kW 급 프로펠러형 마이크로 수차 매개변수 연구
  • Title(Eng)
    Parametric Study of 2.5 kW Class Propeller Type Micro Hydraulic Turbine
  • Keyword
    Hydraulic turbine(수차), Computational fluid dynamics(전산유체역학), Inlet guide vane(입구 가이드 베인), Runner(러너), Parametric study(매개변수 연구)
  • Author(Kor)
    마상범1⋅김 성1⋅최영석1,2⋅차동안1⋅김진혁1,2†
  • Author(Eng)
    SANG-BUM MA1, SUNG KIM1, YOUNG-SEOK CHOI1,2, DONG-AN CHA1, JIN-HYUK KIM1,2†
  • Date
    2020-08
  • Attach file
  • Page
    Page. 387~394
  • Abstract(Eng)
  • 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.