Experimental Investigation of Externally Pressurized Bearings Under High Knudsen Number Conditions
- 1 January 1988
- journal article
- Published by ASME International in Journal of Tribology
- Vol. 110 (1) , 144-147
- https://doi.org/10.1115/1.3261554
Abstract
The characteristics of the externally pressurized bearings under high Knudsen number conditions were investigated experimentally by the use of surface restriction bearings in a medium vacuum on the order of 0.1 kPa (10−3 atm.). The experimental results agreed well with the numerical results calculated from a generalized lubrication equation based on the Boltzmann equation. Therefore, it would appear that this generalized lubrication equation is valid even when flows are categorized into transition flow or free molecular flow.Keywords
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