الفهرس 
the compressor performance
compreessor stability and conrtol designOnly 14 pages are availabe for public view
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Abstract
In the present work the theoretical and experimental studies are carried for
a low pressure compressor.
The aero-dynamic flow instabilities known by rotating stall and surge can
be captured by the model of compression system. To suppress these
instabilities, the recirculation technique is used. In this thesis, the modeling of
compression system with recirculation technique is developed. The modeling
form takes the four-state low order model.
Particle Image Velocimetery (PIV) is a powerful tool, by which the flow
can be visualized in nearly real time. Therefore, the relative turbulence
intensity at different operating condition is calculated using PIV
measurements. The relative turbulence intensity is a good PIV criterion for
both stable and unstable regimes identification.