Surrogate Model Development for Air Foil Thrust Bearings With Chevron-Patterned Trailing Edge

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dc.contributor.authorYildiz, Saltuken
dc.contributor.authorUntaroiu, Alexandrinaen
dc.date.accessioned2025-01-24T18:01:59Zen
dc.date.available2025-01-24T18:01:59Zen
dc.date.issued2024-04-22en
dc.description.abstractAir foil thrust bearings provide some advantages over oil-lubricated thrust bearings. The use of these bearings reduces weight and increases dynamic stability, making it possible to reach high rotational speeds. However, as the bearing reaches high rotational speeds, the higher amount of heat generated results in reduced efficiency, deterioration, and even failure of the rotating machinery system. To overcome this, better thermal management is needed for air foil thrust bearings. Addressing this challenge, this study proposes the use of a chevron pattern at the trailing edge of the top foil to enhance air stream mixing, thus influencing heat dissipation. The main purpose of this study is to identify the optimal design parameters of the top foil trailing edge shape and provide a guideline for future air foil thrust bearing design. In this regard, 3D computational fluid dynamics (CFD) simulations are conducted to evaluate an air thrust foil bearing model performance. The highest temperature value occurring in the fluid and load-carrying capacity is selected as the output to find optimum design values. The design of experiments (DOE) technique is utilized for generating the sample points. A surrogate model is then used jointly with a multi-objective optimization to minimize the peak temperature in the air film and increase the load-carrying capacity. The optimal configuration is compared with the baseline, which is also used to validate the computational model with experimental data. This optimal design approach using a surrogate model can be used for further studies on improving the efficiency of air foil thrust bearings.en
dc.description.versionAccepted versionen
dc.format.extent10 page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifierARTN 084101 (Article number)en
dc.identifier.doihttps://doi.org/10.1115/1.4065104en
dc.identifier.eissn1528-8897en
dc.identifier.issn0742-4787en
dc.identifier.issue8en
dc.identifier.orcidUntaroiu, Alexandrina [0000-0002-5383-8363]en
dc.identifier.urihttps://hdl.handle.net/10919/124369en
dc.identifier.volume146en
dc.language.isoenen
dc.publisherASMEen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectthrust bearingsen
dc.subjectair foil bearingsen
dc.subjectchevron patternen
dc.subjectCFDen
dc.subjectoptimizationen
dc.subjectsurrogate modelen
dc.subjectbearing design and technologyen
dc.subjectgas (air) bearingsen
dc.titleSurrogate Model Development for Air Foil Thrust Bearings With Chevron-Patterned Trailing Edgeen
dc.title.serialJournal of Tribology - Transactions of the ASMEen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherArticleen
dc.type.otherJournalen
pubs.organisational-groupVirginia Techen
pubs.organisational-groupVirginia Tech/Engineeringen
pubs.organisational-groupVirginia Tech/Engineering/Mechanical Engineeringen
pubs.organisational-groupVirginia Tech/Faculty of Health Sciencesen
pubs.organisational-groupVirginia Tech/All T&R Facultyen
pubs.organisational-groupVirginia Tech/Engineering/COE T&R Facultyen

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