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Perspectives on the treatment of secondary flows in axial turbines

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journal contribution
posted on 2018-03-28, 10:14 authored by Hakim T. K. Kadhim, Aldo Rona
A review is presented of the main end-wall treatments for the secondary flows of axial turbines. This encompasses the use of axisymmetric and non-axisymmetric contoured end-walls, the use of fences, and of air injection and blowing. Experimental and numerical results show promise in all these techniques. Interest seems to be drawing towards the use of non-axisymmetric contoured end-walls, due to their good compatibility with current turbine passage designs and their appealing stage pressure loss reduction at design conditions and off design. An insight is provided into the flow changes from non-axisymmetric end walls and on their effect on secondary flow losses.

Funding

This work was undertaken under the auspices of the GE – University of Leicester framework agreement. Advice from Dr. N. Z. Ince and Dr. M. Willetts, GE, is gratefully acknowledged. The Higher Committee for Education Development in Iraq (HCED), award number D121303, is acknowledged.

History

Citation

Energy Procedia, 2018, 142, pp. 1179-1184

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Engineering

Source

9th International Conference on Applied Energy, ICAE2017, Cardiff, UK

Version

  • VoR (Version of Record)

Published in

Energy Procedia

Publisher

Elsevier

issn

1876-6102

eissn

1876-6102

Acceptance date

2018-01-31

Copyright date

2018

Available date

2018-03-28

Publisher version

https://www.sciencedirect.com/science/article/pii/S187661021736126X

Temporal coverage: start date

2017-08-21

Temporal coverage: end date

2017-08-24

Language

en

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