Analysis of Tip Clearance Vortices in a Rotating Axial Fan by Large-Eddy Simulation

摘要：

　　In this paper the flow in a low-speed axial fan at a Reynolds number of 9.36×105 based on the outer casing diameter is investigated by large-eddy simulation(LES)using a cut-cell method based Cartesian flow solver for compressible and viscous flows.The computation includes one of five blades using a periodic boundary condition in azimuthal direction.The paper focuses on the capability of the Cartesian flow solver to efficiently and accurately predict the flow field in axial fans.Simulations with two diffierent grid resolutions and volume flow rates have been performed.Instantaneous and mean flow field results for the fan focusing on the phenomena near the tip-gap region including the tip-gap vortex will be discussed.

关键词： Turbulence Low-speed axial fan Large-eddy simulation Tip-gap vortex

作者: Alexej Pogorelov Matthias Meinke Wolfgang Schr(o)der

作者单位: Institute of Aerodynamics,RWTH Aachen University,Wüllnerstr. 5a,52062 Aachen,Germany

会议类型: 国际会议

会议名称: The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)

会议地点: 北京

会议语种:英文

页码: 1-9

在线出版日期: 2014-09-15（万方平台首次上网日期，不代表论文的发表时间）