Fluid thermal effect on non-contacting labyrinth seal of 20 MW steam turbine

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dc.contributor.authorMammar, Lahouarics
dc.contributor.authorTayeb, Yahiaouics
dc.contributor.authorLadjedel, Omarcs
dc.contributor.authorŠikula, Ondřejcs
dc.coverage.issue1cs
dc.coverage.volume64cs
dc.date.accessioned2023-01-18T15:55:12Z
dc.date.available2023-01-18T15:55:12Z
dc.date.issued2019-12-17cs
dc.description.abstractThis paper is divided into two parts; the first describes a CFD analysis of a gland packing labyrinth seals in 20 MW steam turbine in LNG plant using ANSYS CFX code as an isothermal simulation in fluid domain. The results of two turbulence models k- and k- SST are compared and validated against experimental data. It is shown that the labyrinth seal leakage is proportional to the clearance cube so any variation in clearance can have a significant impact on the steam leakage. This clearance between the shaft and the labyrinth seal vary as a function of operating temperature due to the different rates of thermal expansion of the materials for these two components. Likewise the fluid temperature has a direct effect on fluid dynamic behavior. For that; the second part of the paper investigates the effect of fluid thermal conditions of the labyrinth seal via the heat transfer and Nusselt number variation in the stator and the rotor, for different cases of inlet temperature (400 °C, 200 °C, 100 °C, 50 °C) and pressure ratio (2.5, 4.5, 6.5) for an ideal gas. Also it is important to know the temperature distribution across tooth and cavities of the labyrinth seal, and finally the Influence of Inlet total temperature on fluid pressure drop in the labyrinth seal will be treated for improving and readjusting the steam turbine sealing system.en
dc.formattextcs
dc.format.extent31-42cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationPeriodica Polytechnica Mechanical Engineering. 2019, vol. 64, issue 1, p. 31-42.en
dc.identifier.doi10.3311/PPme.14176cs
dc.identifier.issn0324-6051cs
dc.identifier.other162761cs
dc.identifier.urihttp://hdl.handle.net/11012/208759
dc.language.isoencs
dc.publisherFaculty of Mechanical Engineering of the Budapest University of Technology and Economicscs
dc.relation.ispartofPeriodica Polytechnica Mechanical Engineeringcs
dc.relation.urihttps://pp.bme.hu/me/article/view/14176cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/0324-6051/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectCFD analysesen
dc.subjectHeat transferen
dc.subjectLabyrinth sealsen
dc.subjectSteam turbineen
dc.subjectTurbomachineryen
dc.titleFluid thermal effect on non-contacting labyrinth seal of 20 MW steam turbineen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-162761en
sync.item.dbtypeVAVen
sync.item.insts2023.01.18 16:55:12en
sync.item.modts2023.01.18 16:14:28en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav technických zařízení budovcs
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