Pseudospectral Orbit Simulation of Non-Ideal Gas-Lubricated Journal Bearings for Microfabricated Turbomachines.

摘要

A journal bearing simulation tool developed to aid the design of the MIT microturbomachine bearings is described. This tool uses an orbit method with a pseudospectral technique for treating the Reynolds equation. Comparison is made to various published data. Two types of stability chart are presented and their application to turbomachine bearing design is discussed. Simulations of imbalance, non-circular geometry, and nonuniform pressures at the bearing ends are also demonstrated.