한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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정익과 동익의 상호작용을 고려한 익렬의 공력 형상 최적 설계

Optimum Design of Aerodynamic Shape of Cascade with Rotor-Stator Interactions

  • 조장근 (부산대학교 대학원 기계공학과) ;
  • 박원규 (부산대학교 기계기술연구소(기계공학부))
  • 발행 : 2002.09.01
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초록

Since the previous cut-and-try design algorithm requires much cost and time, the automated design technique with the CFD and optimum design algorithm has recently been concerned. In this work, the Navier-Stokes equation was solved to gain more detailed viscous flow information of cascade with rotor-stator interactions. The H-grid embedded by O-grid was generated to obtain more accurate solution by eliminating the branch cut of H-grid near airfoil surface. To handle the relative motion of the rotor to the stationary stator, the sliding multiblock method was applied and the cubic-spline interpolation was used on the block interface boundary. To validate present procedure, the time-averaged aerodynamic loads were compared with experimeatal data. A good agreement was obtained. The Modified Method of Feasible Direction (MMFD) was used to carry out the sensitivity analysis of the change of aerodynamic performance by the changes of the cascade geometry. The present optimization of the cascade gave a dramatic reduction of the drag while the lift maintains at the value within the user-specified tolerance.

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참고문헌

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  2. Investigations of an air starting motor of marine medium-speed diesel engine with numerical analyses vol.19, pp.2, 2010, https://doi.org/10.1007/s11630-010-0148-8