상용 CFD코드를 이용한 입형 다단 원심펌프 성능해석

Performance Analysis of the Vertical Multi-stage Centrifugal Pump using Commercial CFD Code

  • 모장오 (한국해양대학교 대학원 기계공학과) ;
  • 강신정 (한국해양대학교 대학원 기계공학과) ;
  • 송근택 (한국해양대학교 대학원 기계공학과) ;
  • 남청도 (한국해양대학교 기관시스템공학부) ;
  • 이영호 (한국해양대학교 기계정보공학과)
  • 발행 : 2002.10.01

초록

A commercial CFD code is applied to analyze the 3-D viscous flow field within vertical multi-stage centrifugal pump including impeller with 6 blades and guide vane with 11 blades and is performed by changing flow rate from 10 to $26m^3/h$ at the constant 3500rpm. The purpose of this 3-D numerical simulation is not only to confirm how much the effect of three kinds of blade inlet breadth (11mm, 11.5mm, 12mm) of impeller has influence on the performance of vertical multi-stage pump but also to make clear the cause about performance difference at the exit side of impeller and guide vane. The vertical multi-stage pump consisit of the impeller, guide, vane and cylinder. The grid of numerical analysis used to the vertical multi-stage pump is 18,000, 45,000, and 100000 cells in case of the impeller, guide vane, cylinder and total grid is 730,000 cells. The characteristics such as total pressure coefficient, total head, shaft horse power, power efficiency at the exit side of impeller and guide vane, discharge coefficient are represented according to flow rage changing.

키워드