Applications of axial and radial compressor dynamic system modeling

The presented work is a compilation of four different projects related to axial and centrifugal compression systems. The projects are related by the underlying dynamic system modeling approach that is common in all of them. Two types of models are introduced, suitable for modeling the dynamic behavior of axial and centrifugal compression systems: a compact single semi-actuator disk model, Model I, and a new modular multi semi-actuator disk model, Model II. The first project analyzes aerodynamically induced whirling forces in axial-flow compressors and a new unsteady low order model is introduced to predict the destabilizing whirling forces. The model consists of two parts: compressor Model I with the effect of tip-clearance induced distortion, and an aerodynamically induced force model. The modeling results are compared to experimental data obtained from the GE Aircraft Engines test program on compressor whirl. Previously outstanding whirl-instability issues are resolved, including prediction of the direction and magnitude of rotor whirl-inducing forces; such issues are important in the design of modern axial-flow compressors.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2001

Author dc:creator

• Spakovszky, Zoltán S. (Zoltán Sándor), 1972-

Advisor dc:contributor.advisor

• James D. Paduano.

• Aeronautics and Astronautics.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/8888

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/8888