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Rim sealing of rotor-stator wheelspaces in the presence of external flow

Chew, JW, Green, T and Turner, AB (1994) Rim sealing of rotor-stator wheelspaces in the presence of external flow American Society of Mechanical Engineers (Paper). pp. 1-12.

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Sealing of the cavity formed between a rotating disc and a stator with an asymmetric external flow is considered. In these circumstances circumferential pressure variations in the external flow and the pumping action of the disc may draw fluid into the cavity. Gas concentration measurements, showing this effect, have been obtained from a model experiment with a simple axial clearance seal. In the experiment, guide vanes, fitted upstream of the rim seal, generate an asymmetric external flow. The measurements are shown to be in reasonable agreement with three-dimensional computational fluid dynamics (CFD) calculations and are also compared with more elementary models. The CFD results give further insight into the effects of ingestion within the cavity.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Green, T
Turner, AB
Date : 1 January 1994
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:02
Last Modified : 24 Jan 2020 21:37

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