Fluid Machinery and Vortical Flow Phenomena

Abstract

A flow diagnostic technique based on an EFD/CFD hybrid analysis approach and a smart data visualization has been developed to elucidate vortical flow phenomena in fluid machinery. The diagnostic technique has been applied to the breakdown of tip leakage vortex in compressor rotors, the rotating stall inception in a low-speed axial compressor rotor and a multi-stage transonic axial compressor, and the three-dimensional behavior of tip vortex in half-ducted propeller fans.