The manufacturer of a high speed, motor-driven compressor was seeking a new centrifugal compressor design to be used in a water aeration application. The compressor needed to be powered by a high-speed electric motor. In order to satisfy the customer’s weight requirement, the design had to be very compact.
Figure 1. High Speed Compressor Design.
The project began with a meanline design and analysis. It was determined that in order to gain a more efficient compressor design, trade-offs would need to be considered quickly and efficiently, such as speed, blade number, diffuser type, and blade back sweep. Using CFX Computational Fluid Dynamics (CFD) software, a three-dimensional compressor design (Figure 1) was achieved.
The manufacturer then built and tested the prototype. The testing demonstrated that the compressor achieved 82% isentropic efficiency. This increased efficiency was considerably higher in comparison with its competitors. Since the time of this design and analysis, the compressor has gone into successful full scale production.
A major pump OEM called on MSI to help resolve multiple pump driveshaft failures for an ore mining company in East Africa.
To identify potential opportunities for early bearing failure, MSI performed experimental modal analysis (EMA) and operational deflection shape (ODS) tests on a prototype unit for the manufacturer.