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TECHNICAL PAPERS: Gas Turbines: Aircraft Engine

Comparison of Computational Fluid Dynamics and Particle Image Velocimetry Data for the Airflow in an Aeroengine Bearing Chamber

[+] Author and Article Information
C. W. Lee, P. C. Palma, K. Simmons, S. J. Pickering

University Technology Centre in Gas Turbine Transmission Systems, University of Nottingham, University Park, Nottingham NG7 2RD, UK

J. Eng. Gas Turbines Power 127(4), 697-703 (Mar 01, 2004) (7 pages) doi:10.1115/1.1924635 History: Received October 01, 2003; Revised March 01, 2004

Investigations into the single-phase velocity field of a model aeroengine bearing chamber are presented. Adequately resolving the airflow field is important to subsequent computational modeling of two-phase fluid transport and heat transfer characteristics. A specially designed test rig, representing the features of a Rolls Royce Trent series aeroengine bearing chamber, was constructed. Experimental data for the airflow field was obtained using particle image velocimetry (PIV). The results show a strong influence of shaft rotation and chamber geometry on the flow features within the bearing chamber. A computational fluid dynamics (CFD) simulation was carried out using the commercial CFD code FLUENT 6. Flow features were adequately modeled, showing the features of secondary velocities. Turbulence modeling using the differential Reynolds stress (RSM) model shows good agreement with the experimental data.

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Copyright © 2005 by American Society of Mechanical Engineers
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Figures

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Figure 1

Section view of HP–IP bearing chamber

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Figure 2

Experimental set-up

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Figure 3

PIV measurement planes

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Figure 4

Computational domain

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Figure 5

Normalized tangential velocity (a) plane A; (b) plane B; (c) plane C

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Figure 6

Normalized radial velocity (a) plane A; (b) plane B; (c) plane C

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Figure 7

Secondary flow vectors

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Figure 8

Turbulence intensity profiles (a) plane A; (b) plane B; (c) plane C

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