Effects of lubricant fluid with nanoparticle additive on the load capacity of a hydrostatic journal bearing

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dc.contributor.authorDal, Abdurrahim
dc.contributor.authorKiliç, Mustafa
dc.contributor.authorAkyüz, Ali Özhan
dc.contributor.authorTuncer, Azim Doğuş
dc.contributor.authorGungor, Afsin
dc.date.accessioned2025-01-06T17:30:24Z
dc.date.available2025-01-06T17:30:24Z
dc.date.issued2020
dc.description.abstractHydrostatic journal bearings are recommended for supporting shafts operating at high speeds and under heavy loads in the industry. In the journal bearings, lubricant viscosity decreases with increasing temperature at high rotation speeds and hence, the fluid between the surfaces should be circulated using a pump to cool the lubricant. However, the lubricant supplying between the surfaces at the high flow rate causes the whirl instability and vibrations problems in the bearing-shaft system. These instability problems give rise to significant damage on the system during operating at the high speeds and under heavy loads. As a solution to this problem, it could be suggested to control the variation of the lubricant viscosity concerning the temperature by adding nanoparticle. In the present work, the effects of the lubricant with nanoparticle additives on the load carrying capacity of a hydrostatic journal bearing are theoretically investigated. The fluid film flow between the bearing and rotor surfaces are modelled with Reynolds equation and the viscosity term in Reynold’s equation is defined as a function which depends on the nanoparticle properties. Then, the pressure distribution is obtained with solving the film flow equation and the load capacity is calculated for different nanoparticle parameters using this pressure distribution. The results show that the usage of the lubricant with nanoparticle increases the load performance of the hydrostatic journal bearing and the influences of the nanoparticle size on the load performance is more dominant for high volumetric ratio. © 2020, TUBITAK. All rights reserved.
dc.identifier.doi10.31202/ecjse.686845
dc.identifier.endpage762
dc.identifier.issn2148-3736
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85095934561
dc.identifier.scopusqualityQ4
dc.identifier.startpage753
dc.identifier.trdizinid465978
dc.identifier.urihttps://doi.org/10.31202/ecjse.686845
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/465978
dc.identifier.urihttps://hdl.handle.net/20.500.14669/1589
dc.identifier.volume7
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.language.isotr
dc.publisherTUBITAK
dc.relation.ispartofEl-Cezeri Journal of Science and Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectHydrostatic journal bearing
dc.subjectLoad capacity
dc.subjectLubricant with nanoparticle
dc.subjectRotordynamics
dc.titleEffects of lubricant fluid with nanoparticle additive on the load capacity of a hydrostatic journal bearing
dc.title.alternativeNanoparçacık katkılı yağlayıcı akışkanın radyal hidrostatik yatağın yük taşıma kapasitesine etkisi
dc.typeArticle

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