Evaluation of flow behavior for clearance brush seals

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dc.contributor.authorDogu, Yahya
dc.contributor.authorAksit, Mahmut F.
dc.contributor.authorDemiroglu, Mehmet
dc.contributor.authorDinc, Osman Saim
dc.date.accessioned2020-06-25T17:48:03Z
dc.date.available2020-06-25T17:48:03Z
dc.date.issued2008
dc.descriptionDogu, Yahya/0000-0003-0474-2899
dc.description.abstractThe industrial applications of brush seals have been increasing due to their superior sealing performance. Advances in the understanding of seal behavior have been pushing the design limits to higher-pressure load, temperature, surface speed, and rotor excursion levels. The highest sealing performance can be achieved when the bristle pack maintains contact with the rotor surface. However due to many design and operational constraints, most seals operate with some clearance. This operating clearance cannot be avoided due to rotor runouts, transient operating conditions, or excessive bristle wear. In some applications, a minimum initial clearance is required to ensure a certain amount of flow rate for component cooling or purge flow. Typically, brush seal failure occurs in the form of degraded sealing performance due to increasing seal clearance. The seal performance is mainly characterized by the flow field in close vicinity of the bristle pack, through the seal-rotor clearance, and within the bristle pack. This work investigates the flow field for a brush seal operating with some bristle-rotor clearance. A nonlinear form of the momentum transport equation for a porous medium of the bristle pack has been solved by employing the computational fluid dynamics analysis. The results are compared with prior experimental data. The flow field for the clearance seal is observed to have different characteristics compared to that for the contact seal. Outlined as well are the flow features influencing the bristle dynamics.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1115/1.2770479
dc.identifier.issn0742-4795
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-42149136839
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org10.1115/1.2770479
dc.identifier.urihttps://hdl.handle.net/20.500.12587/4270
dc.identifier.volume130en_US
dc.identifier.wosWOS:000253484200031
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAsme-Amer Soc Mechanical Engen_US
dc.relation.ispartofJournal Of Engineering For Gas Turbines And Power-Transactions Of The Asme
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleEvaluation of flow behavior for clearance brush sealsen_US
dc.typeArticle

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