Behavior of Rotating Stall Inception in an Axial Compressor Rotor

Abstract

A transient phenomenon of stall inception in an axial compressor was investigated experimentally with an array of 4×6 pressure sensors mounted on the casing wall. The precise distributions of instantaneous casing wall pressure was obtained by a newly-developed 'Synchronous Field Measurement'. At stall inception, the temporal variation of the casing wall distribution reveals the development of the leading edge separation and the separation vortex.