Virial Approximation for Load and Loss in High-Speed Journal Bearings Using Pressurized Gases

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dc.contributor.authorChien, Ssu-Yingen
dc.contributor.authorCramer, Mark S.en
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.date.accessioned2019-03-01T13:54:51Zen
dc.date.available2019-03-01T13:54:51Zen
dc.date.issued2019-02-17en
dc.date.updated2019-03-01T10:47:01Zen
dc.description.abstractWe consider steady, laminar, compressible lubrication flows in a high-speed two-dimensional journal bearing governed by the appropriate Reynolds equation. The thermodynamic states correspond to pressurized gases and are in the single-phase regime. Simple explicit formulas for the load capacity, power loss, and attitude angle are derived by applying the virial (or small density) expansions of pressure and shear viscosity to results developed in previous studies. The present virial approximation was compared to the exact numerical solutions to the Reynolds equation. It was shown that the results based on our virial expansions are quite accurate at thermodynamic states corresponding to dense and supercritical gases. The first virial correction is seen to significantly improve predictions based on the ideal gas theory.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationChien, S.-Y.; Cramer, M.S. Virial Approximation for Load and Loss in High-Speed Journal Bearings Using Pressurized Gases. Fluids 2019, 4, 27.en
dc.identifier.doihttps://doi.org/10.3390/fluids4010027en
dc.identifier.urihttp://hdl.handle.net/10919/88035en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectfluid mechanicsen
dc.subjectsupercritical fluidsen
dc.subjectvirial expansionen
dc.subjectcompressible lubricationen
dc.subjectlow Reynolds numberen
dc.titleVirial Approximation for Load and Loss in High-Speed Journal Bearings Using Pressurized Gasesen
dc.title.serialFluidsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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