{rfName}
TI

Indexed in

License and use

Citations

7

Altmetrics

Grant support

RC and MG wish to thank ITP Aero for allowing the publication of this paper and for its support during the project. This work has been carried-out under ITP contract No. DTP/ITP/16/001, UPM Project No. P1614120148.

Impact on the Sustainable Development Goals (SDGs)

Analysis of institutional authors

Corral, RoqueCorresponding AuthorGreco, MicheleAuthorVega, AlmudenaAuthor
Share
Publications
>
Proceedings Paper

TIP-SHROUD LABYRINTH SEAL EFFECT ON THE FLUTTER STABILITY OF TURBINE ROTOR BLADES

Publicated to:Proceedings Of The Asme Turbo Expo: Turbomachinery Technical Conference And Exposition, 2019, Vol 7a. 7A-2019 (UNSP V07AT36A017): - 2019-01-01 7A-2019(UNSP V07AT36A017), DOI: 10.1115/GT2019-91489

Authors: Corral, Roque; Greco, Michele; Vega, Almudena;

Affiliations

Ind Turbopropulsores SAU, Adv Engn Direct, Madrid 28108, Spain - Author
SIEMENS Gamesa, Technol & Knowledge Div, Madrid 28043, Spain - Author
Univ Politecn Madrid, Sch Aeronaut & Space, Madrid 28040, Spain - Author
UPM, Dept Fluid Dynam & Aerosp Prop, Sch Aeronaut & Space, Madrid, Spain - Author

Abstract

The effect of the tip-shroud seal on the flutter onset of a shrouded turbine rotor blade, representative of a modern gas turbine, is numerically tested and the contribution to the work-per-cycle of the aerofoil and the tip-shroud are clearly identified. The numerical simulations are conducted using a linearised frequency domain solver. The flutter stability of the shrouded rotor blade is evaluated for an edgewise mode and compared with the standard industrial approach of not including the tip-shroud cavity. It turns out that including the tip shroud significantly changes the stability prediction of the rotor blade. This is due to the fact that the amplitude of the unsteady pressure created in the inter-fin cavity, due to the motion of the airfoil, is much greater than that of the airfoil. It is concluded that the combined effect of the seal and its platform tends to stabilise the rotor blade for all the examined nodal diameters and reduced frequencies. Finally, the numerical results are shown to be consistent with those obtained using an analytical simplified model to account for the effect of the labyrinth seals.

Keywords
Affordable and clean energy

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-05-17:

  • Scopus: 7
Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-17:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 4 (PlumX).
Continuing with the social impact of the work, it is important to emphasize that, due to its content, it can be assigned to the area of interest of ODS 7 - Affordable and clean energy, with a probability of 80% according to the mBERT algorithm developed by Aurora University.
Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (CORRAL GARCIA, ROQUE) and Last Author (VEGA REMESAL, ANGEL).

the author responsible for correspondence tasks has been CORRAL GARCIA, ROQUE.