Investigation of effective groove types for a film riding seal

Show simple item record Teixeira, Joao Amaral Tibos, S. M. Georgakis, C. 2017-07-21T15:19:56Z 2017-07-21T15:19:56Z 2017-02-14
dc.identifier.citation Tibos SM, Teixeira JA, Georgakis C. (2014) Investigation of effective groove types for a film riding seal, Journal of Engineering for Gas Turbines and Power, Volume139, Issue 7, 072503. ASME Paper No: GTP-16-1494 en_UK
dc.identifier.issn 0742-4795
dc.description.abstract Over the past two decades, significant efforts have been made to introduce film riding sealing technology on large industrial or aerospace gas turbines. The main challenge comes from the high surface speeds and high temperatures, which lead to large thermal distortions. One approach to tackle the effect of thermally induced distortion is to design a seal to operate at a large film to limit the viscous heat generation. To design a seal pad that maximizes force at relatively high film heights, it is important to select the seal groove type that looks the most promising to deliver this characteristic. Several groove types have been assessed as part of this study. The most promising groove type is the Rayleigh step, which gives the strongest level of combined hydrostatic and hydrodynamic load support while also being easier to tessellate on individual seal segments. The results generated using a uniform grid Reynolds equation method show reasonable agreement with computational fluid dynamics (CFD) calculations. This provides confidence in the validity of the method, approach, and results. en_UK
dc.language.iso en en_UK
dc.publisher ASME en_UK
dc.rights Attribution 4.0 International
dc.title Investigation of effective groove types for a film riding seal en_UK
dc.type Article en_UK

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