Effects of geometrical parameters on thermohydrodynamic performance of a bearing operating with nanoparticle additive oil

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dc.authoridDal, Abdurrahim/0000-0002-7012-2148
dc.authoridSahin, Mahir/0000-0002-9565-9160
dc.contributor.authorDal, Abdurrahim
dc.contributor.authorSahin, Mahir
dc.contributor.authorKılıç, Mustafa
dc.date.accessioned2025-01-06T17:43:23Z
dc.date.available2025-01-06T17:43:23Z
dc.date.issued2023
dc.description.abstractPurposeBearing performance characteristics, such as stiffness and load capacity, are related to the viscosity of the fluid circulating through the gap. Nanoparticle additives in lubricant are one way to enhance of the viscosity. This study aims to investigate the effect of nanoparticle additives on the thermohydrodynamic performance of journal bearing with different bearing parameters. Design/methodology/approachThe temperature distribution is modeled using a three-dimensional energy equation. The velocity components are calculated on the pressure distribution governed by Dowson's equation. Moreover, the heat transfer between the journal and lubricant is modeled with Fourier heat conduction equation. On the other hand, the viscosity equation is derived for Al2O3 nanoparticles as a function of the volume ratio and the temperature. An algorithm based on the finite difference method is developed, and a serial simulation is performed for different parameters and different volume ratio of nanoparticle. FindingsWith the increase in the nanoparticle volume ratio, the maximum temperature decreases for the lower clearance values, but the addition of the nanoparticle influence on the maximum temperature reverses when the clearance grows up. The nanoparticle additives increase further the maximum temperature for higher values of L/D ratios. Moreover, the effects of the nanoparticle additives on the pressure are stronger at high eccentricity ratios for all bearing parameters. Originality/valueThis paper provides valuable design parameters for journal bearing with lubricant containing the nanoparticle additives.
dc.identifier.doi10.1108/ILT-12-2022-0369
dc.identifier.endpage262
dc.identifier.issn0036-8792
dc.identifier.issn1758-5775
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85147384197
dc.identifier.scopusqualityQ2
dc.identifier.startpage255
dc.identifier.urihttps://doi.org/10.1108/ILT-12-2022-0369
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2651
dc.identifier.volume75
dc.identifier.wosWOS:000921587500001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherEmerald Group Publishing Ltd
dc.relation.ispartofIndustrial Lubrication and Tribology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectJournal Bearing
dc.subjectNanoparticle additives
dc.subjectNanolubricant
dc.subjectThermohydrodynamic analysis
dc.titleEffects of geometrical parameters on thermohydrodynamic performance of a bearing operating with nanoparticle additive oil
dc.typeArticle

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