Investigations on the Flow Field in an Unshrouded Pump Impeller Geometry  

作　　者：Sten Sieber Friedrich Frhlig Saban Caglar Martin Gabi 

机构地区：[1]Fchgebiet Strmungsmaschinen, Karlsruhe Institute of Technology, Germany

出　　处：《Journal of Thermal Science》2012年第2期136-144,共9页热科学学报（英文版）

摘　　要：Transient CFD simulations are performed to investigate the flow behaviour inside an unshrouded pump using the SAS method. Two blade designs are compared at two different tip clearances and the results are validated by measurements. The detected vortex structure is visualized by the normalized helicity, further discussed regarding its development and behaviour and finally implicated to the efficiency of the two different blade designs.

关 键 词：unshrouded pump tip clearance HELICITY 

分 类 号：TH38[机械工程—机械制造及自动化]