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Abstract

Details of a study concerning orifice restrictor losses in externally pressurized gas lubricated journal bearings are given. The type of compensation considered is the pocketed orifice design.

The analysis presented includes the effects of pressure recovery in the pocket and entrance loss effects at inlet to the bearing film. Also, by treating the flow in the bearing film local to the pocket as radial flow, the effect of dispersion is accounted for.

It is shown that good agreement exists between computed and experimental results in pressure profiles and also for load capacity up to touch-down conditions.

From the analysis, the effect of the inherent compensation factor, number of orifices and pocket diameter on load capacity is discussed.

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Orifice Restrictor Losses in Journal Bearings

Abstract

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References