Calculation of surface roughness effects on air-riding seals

Guardino, C, Chew, JW and Hills, NJ (2002) Calculation of surface roughness effects on air-riding seals American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI, 3 B. pp. 795-803.

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Abstract

The effects of surface roughness on air-riding seals are investigated here using the Rayleigh-pad as an example. Both incompressible and compressible flows are considered using both CFD analysis and analytical/numerical solutions of the Reynolds equation for various 2D or 3D roughness patterns on the stationary wall. A 'unit-based' approach for incompressible flows has also been employed and is shown to be computationally much less expensive than the full-geometry solution. Results are presented showing the effect of surface roughness on the net lift force. The effects of varying the Reynolds number are demonstrated, as well as comparative results for static stiffness.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :	Name Email ORCID Guardino, C Chew, JW Hills, NJ
Date :	2002
Identification Number :	10.1115/GT2002-30246
Depositing User :	Symplectic Elements
Date Deposited :	28 Mar 2017 15:50
Last Modified :	31 Oct 2017 14:40
URI:	http://epubs.surrey.ac.uk/id/eprint/712731

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