RECENT EXPERIENCES IN FULL LOAD FULL PRESSURE SHOP TESTING OF A HIGH PRESSURE GAS INJECTION CENTRIFUGAL COMPRESSOR

摘要

The most important conclusion to be drawn from the problems encountered on this compressor is that general aerodynamic and rotordynamic design criteria are not infallible. Despite an aero design that conformed to all generally accepted guidelines for avoiding stall, the unit clearly suffered from stall-like phenomena at a characteristic frequency of six to eight percent of running speed. Limited instrumentation made it impossible to detect the exact origin of the stall but the successful modifications demonstrated that the source was the stationary components.