Abstract
This paper presents a numerical study of the effect of rotor mounted bolts on the moment coefficient and flow structure within a rotor-stator cavity representative of modern gas turbine engine design. The CFD computations are performed using the commercial code FLUENT. The simulation methodology is first validated using experimental data from plain co-rotating disc and rotor-stator cavities from the open literature. Comparisons are then made with experimental data obtained from a test rig at the Thermo Fluid Mechanics Research Centre (TFMRC), University of Sussex. Computations were performed at Reφ = 6.8 × 106, Cw = 5929 (λT = 0.35) with different numbers of bolts (0 < N < 60), and also a continuous ring, at r/b = 0.9. The study has improved the current understanding of the effect on moment coefficient and flow structure that rotor mounted protrusions have in rotor-stator systems. It is seen that the contribution of skin friction to the moment coefficient reduces as the number of bolts is increased. The size and shape of the wake created by a rotating bolt also means that the pressure loss per bolt reduces with N but the overall effect is to increase the moment coefficient because there are more bolts.
Original language | English |
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Title of host publication | ASME 2011 Turbo Expo |
Subtitle of host publication | Turbine Technical Conference and Exposition, GT2011 |
Publisher | American Society of Mechanical Engineers (ASME) |
Pages | 667-679 |
Number of pages | 13 |
Edition | PARTS A, B, AND C |
ISBN (Print) | 9780791854679 |
DOIs | |
Publication status | Published - 31 Dec 2011 |
Event | ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 - Vancouver, BC, Canada Duration: 6 Jun 2011 → 10 Jun 2011 |
Publication series
Name | Proceedings of the ASME Turbo Expo |
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Number | PARTS A, B, AND C |
Volume | 7 |
Conference
Conference | ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 |
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Country/Territory | Canada |
City | Vancouver, BC |
Period | 6/06/11 → 10/06/11 |
Bibliographical note
Copyright:Copyright 2013 Elsevier B.V., All rights reserved.
ASJC Scopus subject areas
- General Engineering