한국전산유체공학회:학술대회논문집

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
권호 표지

The application of Large Eddy Simulation in designing the impellers of double-flow-conduits-sewage pump

  • Xue-y QI (Dept. of Fluid Machinery and Fluid Power EngineeringGansu Univ. of Tech Lanzhou City) ;
  • Zai-lun Liu (Dept. of Fluid Machinery and Fluid Power EngineeringGansu Univ. of Tech Lanzhou City) ;
  • chonl QI (Dept. of System Experiment Second Instutite of Science and Engineering Group of Aerospace Department Beijing City) ;
  • Fan-zhon MENG (Dept. of Fluid Machinery and Fluid Power Engineering Gansu Univ. of Tech)
  • 발행 : 2003.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, Gauss filter function is used to filter the N-S equation and the subgrid-scale Reynold stresses model is introduced to deduce the practical form of LES equation for 2-D case for flow calculation of hydraulic machine. Then the LES equation and its discrete form in computational field are obtained in the body-fitted coordinate system and the numerical calculation program is built. The incompressible turbulent flow in double-flow-conduits-sewage pump impeller is computed by using the abovementioned program, and then the distribution rules of velocity and pressure in flow field are obtained. Based on this, the designs of double-flow-conduits-sewage pump impeller are optimized.

키워드