Accession Number:

ADA409566

Title:

Unsteady Aerodynamics & Aeromechanics of Multi-Stage Turbomachinery Blading

Descriptive Note:

Final rept. Nov 1996-Aug 2002

Corporate Author:

PURDUE RESEARCH FOUNDATION LAFAYETTE IN

Personal Author(s):

Report Date:

2002-11-30

Pagination or Media Count:

200.0

Abstract:

An integrated experiment-theory approach included collaboration between Pratt Whitney, Duke University, and Purdue University. A benchmark-standard multistage transonic research compressor was developed by modifying the Purdue High-Speed Axial Compressor to feature new IGV and stator rows representative of modern high pressure compressors. A quantitative understanding and predictive capability for multi-stage blade row forced response was developed by analytically and experimentally investigating the fundamental flow phenomena. Experiments at Purdue investigated and quantified the interacting blade row unsteady aerodynamics and resulting vane vibration and stress response. Duke University developed a new computationally efficient unsteady aerodynamic analysis of multistage flows associated with flutter and forced response. The inherently small damping of complex higher order modes was addressed by investigating techniques to control the flow induced vibrations. The issue of robustness was also considered.

Subject Categories:

  • Aerodynamics
  • Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE