Enhanced understanding of leakage in mechanical seals with elliptical dimples based on CFD simulation

Sen Jiang (School of Chemical Engineering, Sichuan University, Chengdu, China)
Hua Ji (School of Chemical Engineering, Sichuan University, Chengdu, China)
Tianhao Wang (School of Chemical Engineering, Sichuan University, Chengdu, China)
Donglin Feng (School of Chemical Engineering, Sichuan University, Chengdu, China)
Qian Li (School of Chemical Engineering, Sichuan University, Chengdu, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Publication date: 22 August 2019

Abstract

Purpose

The shapes of surface textures have been designed to control the leakage of mechanical seals in recent years. The purpose of this paper is to demonstrate the influence of geometric properties of elliptical dimples on the leakage rate.

Design/methodology/approach

A new geometric feature point is expressed using an analytical solution to locate the high-pressure zones. Furthermore, a numerical model of the three-dimensional flow field for the mechanical seal with elliptical dimples is developed using ANSYS Fluent to demonstrate the influencing mechanism.

Findings

The location of the proposed geometric converging point coincides with the maximum pressure point under different orientation angles. An inward flow on the leakage section observed from the simulation results is responsible for decreasing the leakage rate.

Originality/value

The influencing mechanism of the elliptical dimple on the leakage rate is demonstrated, which can facilitate the design of surface textures.

Keywords

Acknowledgements

The authors would like to acknowledge the support of funding by the Key Technologies Research and Development Program of Deyang, China (No. GXCC20180013).

Citation

Jiang, S., Ji, H., Wang, T., Feng, D. and Li, Q. (2019), "Enhanced understanding of leakage in mechanical seals with elliptical dimples based on CFD simulation", Industrial Lubrication and Tribology, Vol. 72 No. 1, pp. 24-30. https://doi.org/10.1108/ILT-03-2019-0087

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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