Enhanced modeling of high-speed compressible lubrication
Authors
Piela, Sean Garrigan
ORCID
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Other Contributors
Tichy, John A.
Rusak, Zvi
Herron, Isom H., 1946-
Blanchet, Thierry A.
Rusak, Zvi
Herron, Isom H., 1946-
Blanchet, Thierry A.
Issue Date
2017-12
Keywords
Mechanical engineering
Degree
PhD
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
At high sliding speed (Mach number greater than 0.5 but subsonic), it is found that: inertia accounts for about 3-5% of load capacity, the work of expansion or compression (dilation) accounts for about 8-14% of load capacity, and that average lubricant temperature is modified by about 9-17% due to dilation. It is important to note that these aspects of compressibility modify the pressure, temperature, and velocity components; also, that these quantifications strongly depend on bearing (film) geometry. It is found that modeling of heat transfer between lubricant and bearing solid surfaces is of maximal importance in high-speed gas lubrication. This corroborates conclusions of modern experimental studies in high-speed gas lubrication.
Description
December 2017
School of Engineering
School of Engineering
Department
Dept. of Mechanical, Aerospace, and Nuclear Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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