Journal article
Radially resolved measurement of stator heat transfer in a rotor-stator disc system
- Abstract:
- This paper describes a new experimental method for measuring stator heat transfer in a rotor-stator disc system using an electrical heater array. The system is partially blocked at the periphery, with radial outflow of rotor-pumped air from an inlet at stator centre. The aim is to improve thermal performance prediction for air-cooled disc type electrical machines. Local Nusselt numbers were measured for 0.6 < r / R < 1 at three non-dimensional gap ratios G = g / R = (0.0106, 0.0212, 0.0297) and rotational Reynolds numbers 3.7 e 4 (is less than or equal to) Re (is less than or equal to) 5.6 e 5. Transition at the stator is observed to occur at Re > 3 e 5 for all gap ratios. Increased Nusselt numbers at the periphery are observed for all Re and G because of the ingress of ambient air along the stator due to the rotor pumping effect.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 947.9KB, Terms of use)
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- Publisher copy:
- 10.1016/j.ijheatmasstransfer.2009.09.006
Authors
- Publisher:
- Elsevier
- Journal:
- International Journal of Heat and Mass Transfer More from this journal
- Volume:
- 53
- Issue:
- 1-3
- Pages:
- 491-501
- Publication date:
- 2010-01-15
- DOI:
- ISSN:
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0017-9310
- Language:
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English
- Keywords:
- Pubs id:
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pubs:297193
- UUID:
-
uuid:5121e442-ec14-46f5-b196-4aa7a0564702
- Local pid:
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pubs:297193
- Source identifiers:
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297193
- Deposit date:
-
2012-12-20
Terms of use
- Copyright holder:
- Elsevier BV
- Copyright date:
- 2010
- Notes:
- Copyright 2009 Elsevier Ltd. All rights reserved. NOTICE: this is the author's version of a work that was accepted for publication in International Journal of Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Heat and Mass Transfer 53 (2010) 491-501, 10.1016/j.ijheatmasstransfer.2009.09.006
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