GT2020-14994_Final.pdf (2.33 MB)
Heat transfer analysis in a rotating cavity with axial through-flow
conference contribution
posted on 2023-06-09, 21:12 authored by Mark Puttock-BrownMark Puttock-Brown, Christopher LongThis paper presents local Nusselt numbers computed from experimental measurements of surface temperature of compressor discs in a multiple rotating cavity test rig with axial throughflow. A validated 2D steady state heat conduction analysis methodology is presented, using the actual test geometry, and 95% confidence intervals calculated using Monte Carlo simulation. Sensitivity of the solution to curve fitting types, geometric simplification and surface instrumentation are explored. The results indicate that polynomial curves fits, whilst computational simple, are unsuitable especially at higher orders. It is shown that geometric simplifications, that typically simplify the algorithmic implementation, may also omit significant variation in heat flux at critical stress relieving locations. The effect of reducing measurement points in the analysis is to both over- predict heat transfer and increase the uncertainty of the results. Finally, the methodology is applied to previously published thermal data from the University of Sussex, facilitating qualitative discussion on the influence of the governing parameters. Whilst this study does not overcome the inherent uncertainty associated with inverse solutions it is intended to present a methodology that is readily available to the wider community for the analysis of thermal test data and suggests some guidelines at the planning and post-processing stages. The range of experiment reported here covers: 1.13x10^5
History
Publication status
- Published
File Version
- Accepted version
Journal
Proceedings of ASME Turbo Expo 2020: Turbomachinery Technical Conference and ExpositionPublisher
ASMEExternal DOI
Volume
7CArticle number
aGT2020-14994Event name
ASME Turbo Expo 2020: Turbomachinery Technical Conference and ExpositionEvent location
London, United KingdomEvent type
conferenceEvent date
September 21 – 25, 2020ISBN
9780791884188Series
Heat TransferDepartment affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Thermo-Fluid Mechanics Research Centre Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2020-05-19First Open Access (FOA) Date
2021-01-19First Compliant Deposit (FCD) Date
2020-05-18Usage metrics
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