In a recent advanced aerodynamic design of turbomachinery, the physical interpretation of three-dimensional flow field obtained by a numerical simulation is important for iterative modifications of the blade or impeller geometry. This paper describes an approach to the physical interpretation of the tip clearance flow in turbomachinery. First, typical flow phenomena of the tip clearance flow are outlined for axial and radial compressors, pumps and turbines to help comprehensive understanding of the tip clearance flow. Then, a vortex-core identification method which enables to extract the vortical structure from the complicated flow field is introduced, since elucidation of the vortical structure is essential to the physical interpretation of the tip clearance flow. By use of the vortex-core identification, some interesting phenomena of the tip clearance flows are interpreted, especially focussing on axial flow compressors.
|Number of pages||13|
|Publication status||Published - Jan 1 2002|
|Event||Proceedings of the 2002 ASME Joint U.S.-European Fluids Engineering Conference - Montreal, Que., United States|
Duration: Jul 14 2002 → Jul 18 2002
|Other||Proceedings of the 2002 ASME Joint U.S.-European Fluids Engineering Conference|
|Period||7/14/02 → 7/18/02|
All Science Journal Classification (ASJC) codes