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Performance evaluation of bidirectional dry gas seals with special groove geometry

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journal contribution
posted on 12.04.2016, 12:26 by H. Su, Ramin RahmaniRamin Rahmani, Homer Rahnejat
There are a very few studies of bidirectional gas seals particularly those with certain profiles used in the industry. Parametric study of performance of bidirectional dry gas seals under a set of operating conditions is presented. The expounded approaches uses solution of 3D Navier-Stokes momentum and continuity equations for various forms of grooved gas seals, particular for the trapezoidal shape variety for which there has been a particular dearth of in-depth analysis. It is shown that such groove geometries enhance the load carrying capacity of the seal through increased hydrodynamic lift. This is as the result of enhanced localised wedge flow particularly with a reduced seal gap. Therefore, there is the opportunity of gap minimisation, whilst reducing leakage rate and power loss. For given operating loading, kinematic and thermal conditions as well as seal geometry and topography, the operating minimum film thickness may be considered as the main design parameter.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology Transactions

Pages

? - ? (27)

Citation

SU, H., RAHMANI, R. and RAHNEJAT, H., 2016. Performance evaluation of bidirectional dry gas seals with special groove geometry. Tribology Transactions, 60(1), pp. 58-69.

Publisher

© Society of Tribologists and Lubrication Engineers. Published by Taylor & Francis.

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

20/01/2016

Publication date

2016-07-11

Notes

This is an Accepted Manuscript of an article published by Taylor & Francis in Tribology Transactions on 4th April 2016, available online: http://dx.doi.org/10.1080/10402004.2016.1146380

ISSN

1040-2004

eISSN

1547-397X

Language

en