LAPSE:2023.27426
Published Article
LAPSE:2023.27426
Experimental and Numerical Analysis of the Gas Flow in the Axisymmetric Radial Clearance
Damian Joachimiak, Andrzej Frąckowiak
April 4, 2023
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.
Keywords
Computational Fluid Dynamics, experiment, flow coefficient, labyrinth seal, leakage, mini gap
Suggested Citation
Joachimiak D, Frąckowiak A. Experimental and Numerical Analysis of the Gas Flow in the Axisymmetric Radial Clearance. (2023). LAPSE:2023.27426
Author Affiliations
Joachimiak D: Institute of Thermal Engineering, Poznan University of Technology, 60-965 Poznan, Poland [ORCID]
Frąckowiak A: Institute of Thermal Engineering, Poznan University of Technology, 60-965 Poznan, Poland
Journal Name
Energies
Volume
13
Issue
21
Article Number
E5794
Year
2020
Publication Date
2020-11-05
Published Version
ISSN
1996-1073
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PII: en13215794, Publication Type: Journal Article
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LAPSE:2023.27426
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doi:10.3390/en13215794
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