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Article

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Title

Method for the reduction of leakage in labyrinth seals by adapting the seal geometry to match the flow conditions

Authors

[ 1 ] Instytut Energetyki Cieplnej, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.10] Environmental engineering, mining and energy

Year of publication

2021

Published in

E3S Web of Conferences

Journal year: 2021 | Journal volume: vol. 323

Article type

scientific article / paper

Publication language

english

Keywords
EN
  • labyrinth seal
  • optimization
  • leakage
  • design method
  • kinetic energy
  • inverse problem
  • steam turbines
  • gas turbines
  • fluid-flow machines
Abstract

EN In this paper a method for reducing leakage in labyrinth seals is presented. This method is based on CFD calculations and consists in the analysis of the phenomenon of gas kinetic energy carry-over in chambers of the seal between gaps. It belongs to the group of geometrical inverse problems and is designed for seals of given outside dimensions. For straight through labyrinth seals it enables determining the number of teeth and their optimal arrangement. This method was developed based on numerical and experimental tests. Examples of numerical calculations presented in this paper prove that this method is effective for straight through seals. We obtained the reduction of leakage ranging from 8.7 to 9.4% relative to the initial geometry with no change in the outside dimensions of the seal.

Pages (from - to)

00014-1 - 00014-5

DOI

10.1051/e3sconf/202132300014

URL

https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/99/e3sconf_mpsu2021_00014.pdf

Presented on

V International Scientific and Technical Conference Modern Power Systems and Units, MPSU 2021, 19-21.05.2021, Kraków, Poland

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

4 months after publication

Ministry points / journal

5

Ministry points / journal in years 2017-2021

5

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