Experimental and numerical investigations on the leakage flow characteristics of labyrinth seals

Li, Jun; Wen, Kesong; Wang, Shizhu; Sheng-ke, Jiang; Kong, Xiangwei

doi:10.1063/1.4816865

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…It was decided to perform two-dimensional calculations due to reduced calculation time for many geometries and various boundary conditions. Data shown in the paper [42] indicate that the rotational speed has a little impact on the gas leakage value. Therefore, the impact of the rotational speed was not included in the general CFD analysis.…”

Section: Parameter Mark Valuementioning

confidence: 90%

Novel Method of the Seal Aerodynamic Design to Reduce Leakage by Matching the Seal Geometry to Flow Conditions

Joachimiak

2021

Energies

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This paper presents a novel method of labyrinth seals design. This method is based on CFD calculations and consists in the analysis of the phenomenon of gas kinetic energy carry-over in the seal chambers between clearances. The design method is presented in two variants. The first variant is designed for seals for which it is impossible to change their external dimensions (length and height). The second variant enables designing the seal geometry without changing the seal length and with a slight change of the seal height. Apart from the optimal distribution of teeth, this variant provides for adjusting chambers geometry to flow conditions. As the result of using both variants such design of the seal geometry with respect to leakage is obtained which enables achieving kinetic energy dissipation as uniform as possible in each chamber of the seal. The method was developed based on numerical calculations and the analysis of the flow phenomena. Calculation examples included in this paper show that the obtained reduction of leakage for the first variant ranges from 3.4% to 15.5%, when compared with the initial geometry. The relation between the number of seal teeth and the leakage rate is also analyzed here. The second variant allows for reduction of leakage rate by 15.4%, when compared with the geometry with the same number of teeth. It is shown that the newly designed geometry reveals almost stable relative reduction of leakage rate irrespective of the pressure ratio upstream and downstream the seal. The efficiency of the used method is proved for various heights of the seal clearance.

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Section: Parameter Mark Valuementioning

confidence: 90%

Novel Method of the Seal Aerodynamic Design to Reduce Leakage by Matching the Seal Geometry to Flow Conditions

Joachimiak

2021

Energies

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“…The experimental research oriented on determining friction loss coefficients for short segments of a straight through labyrinth seal has been presented in [12,18]. The influence of the shaft speed on the leakage of the double-sided seal segment has been shown in [9]. The results of the experimental research and CFD calculations performed on a segment composed of 20 discs have been compared in [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental Research and CFD Calculations Based Investigations Into Gas Flow in a Short Segment of a Heavily Worn Straight Through Labyrinth Seal

Joachimiak

Krzyślak

2017

Polish Maritime Research

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Description of a test stand and measurement equipment for labyrinth seal testing

Joachimiak

Krzyślak

2017

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Experimental and numerical investigations on the leakage flow characteristics of labyrinth seals

Cited by 3 publications

References 9 publications

Novel Method of the Seal Aerodynamic Design to Reduce Leakage by Matching the Seal Geometry to Flow Conditions

Novel Method of the Seal Aerodynamic Design to Reduce Leakage by Matching the Seal Geometry to Flow Conditions

Experimental Research and CFD Calculations Based Investigations Into Gas Flow in a Short Segment of a Heavily Worn Straight Through Labyrinth Seal

Description of a test stand and measurement equipment for labyrinth seal testing

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