To investigate the static characteristics of aerostatic journal bearings with porous bushing, flow model—in which compressibility lubricating gas is considered—is established based on Reynolds lubrication equation, Darcy equation for material, and continuity equation. With finite difference method, schemes non-uniform grids, relaxation virtual node numerical method governing equations compressi...

A large amount of contaminants are collected on the cardboard surface valve-side bushing outlet a converter transformer that has been operating for long period, and can cause performance oil–paper insulation to degrade. The analysis their energy spectrum shown these contain free carbon. To investigate causes formation carbon traces, authors this study analyze law growth insulating paper in pres...