Accession Number:

ADA102330

Title:

Unsteady Effects of Circumferential Pressure Distorted Inlet Flows in Compressors.

Descriptive Note:

Final rept. 1978-1981,

Corporate Author:

CRANFIELD INST OF TECH (ENGLAND) SCHOOL OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1981-06-01

Pagination or Media Count:

147.0

Abstract:

An investigation of the mechanics of rotor unsteady response in the presence of both upstream generated planar distortion and rotating stall is described. To this end, a system for the measurement and analysis of on-rotor pressure data was developed on a single stage, low speed rig. Two areas of investigation based on the compressor operating conditions were pursued operation on the negative slope of the characteristic nominally stable flow and on the positive and zero slope rotating stall. Compressor overall performance and detailed response followed trends anticipated by the blockage effects of the inlet disposed screens. Two classes of rotating stall were isolated, each with different characteristics. One was present under low flow uniform inlet conditions and the other when an inlet distortion was present. Author

Subject Categories:

  • Hydraulic and Pneumatic Equipment
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE