1976-02-01

Design and Test of an Experimental Rotating Diffuser Centrifugal Compressor Test Rig 760927

The mechanical and performance test evaluation of an experimental high pressure ratio single-stage centrifugal compressor incorporating a rotating vaneless-vaned diffuser is discussed. The test rig employed was a turbodrive configuration with the centrifugal impeller driven by a directly-coupled air turbine. The rotating diffuser was supported on a separate shaft operating at approximately 25% impeller speed and directly coupled to a high-speed water brake. Mechanical operation of the compressor rig was satisfactory. Best overall test performance achieved at design speed was a total-total pressure ratio of 7.7 with an adiabatic efficiency of 72.3% (average stage exit Mach number of 0.27). A broad flow range ratio of 1.25 between choke and surge was obtained with the diffuser rotating at design speed.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X