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Article

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Title

Experimental and numerical analysis of the gas flow in the axisymmetric radial clearance

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

2020

Published in

Energies

Journal year: 2020 | Journal volume: vol. 13 | Journal number: no. 21

Article type

scientific article

Publication language

english

Keywords
EN
  • mini gap
  • labyrinth seal
  • experiment
  • leakage
  • flow coefficient
  • CFD
Abstract

EN This paper focuses on the analysis of the gas flow in the axisymmetric mini gap bounded by the surface of the top of the labyrinth seal tooth and the surface of the body. It includes the results of experimental research and numerical calculations. Experimental research focused on the analysis of gas flow for six clearance heights in a wide range of pressure drops. Based on this research, we determined the mass flow in the clearance. Using the Saint-Venant equation, we determined the flow coefficient versus the pressure ratio upstream and downstream from the seal. Flow coefficients for various clearance heights obtained from the experiment can be divided into two data groups, the values of which differ significantly. To explain changes in the value of the gas flow coefficient for selected clearance heights, numerical analysis of the said gas flow was performed using the Fluent software. This analysis allowed us to explain the reason for the variability of the flow coefficient. This research can be the basis for determining the change of seal integrity during operation for staggered and stepped seals.

Pages (from - to)

5794-1 - 5794-13

DOI

10.3390/en13215794

URL

https://www.mdpi.com/1996-1073/13/21/5794/pdf

Comments

article number: 5794

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

at the time of publication

Full text of article

Download file

Access level to full text

public

Ministry points / journal

140

Ministry points / journal in years 2017-2021

140

Impact Factor

3,004

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