dc.contributor.author |
Snedden, Glen C
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dc.contributor.author |
Dunn, Dwain I
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dc.contributor.author |
Ingram, G
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dc.contributor.author |
Gregory-Smith, D
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dc.date.accessioned |
2010-12-10T10:18:19Z |
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dc.date.available |
2010-12-10T10:18:19Z |
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dc.date.issued |
2010-06 |
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dc.identifier.citation |
Snedden, GC, Dunn, D, Ingram, G and Gregory-Smith, D. 2010. Performance of a generic non-axisymmetric end wall in a single stage, rotating turbine at on and off-design conditions. ASME Turbo Expo 2010: Power for Land, Sea and Air. Glasgow, 14-18 June 2010, pp 12 |
en |
dc.identifier.uri |
http://hdl.handle.net/10204/4651
|
|
dc.description |
ASME Turbo Expo 2010: Power for Land, Sea and Air. Glasgow, 14-18 June 2010 |
en |
dc.description.abstract |
The application of non-axisymmetric end walls in turbine stages has gained wide spread acceptance as a means to improve the performance of turbines in both power generation and aero-derivative applications. Non-axisymmetric end walls are aimed at the control of secondary flows and to a large extent have been developed through the use of computational fluid dynamics and detailed measurements in linear and annular cascades and proven in full scale engine tests. Little or no literature is available describing their performance at conditions other than design. This study utilises 5-hole probe measurements in a low speed, model turbine in conjunction with computational fluid dynamics to gain a more detailed understanding of the influence of a generic end wall design on the structure of secondary flows at both on and off-design flow conditions. Results indicate a 0.4% improvement in rotor efficiency at design but this was reduced at off design and at higher loading the rotor efficiency was reduced by 0.5%. Stage efficiencies were improved for all conditions but with a declining trend as load was increased. Experimental and CFD results are examined to investigate these findings further. |
en |
dc.language.iso |
en |
en |
dc.publisher |
2010 by ASME |
en |
dc.relation.ispartofseries |
Conference Paper |
en |
dc.subject |
Non-axisymmetric end wal |
en |
dc.subject |
Generic non-axisymmetric |
en |
dc.subject |
Rotating turbines |
en |
dc.subject |
ASME Turbo Expo 2010 |
en |
dc.title |
Performance of a generic non-axisymmetric end wall in a single stage, rotating turbine at on and off-design conditions |
en |
dc.type |
Conference Presentation |
en |
dc.identifier.apacitation |
Snedden, G. C., Dunn, D. I., Ingram, G., & Gregory-Smith, D. (2010). Performance of a generic non-axisymmetric end wall in a single stage, rotating turbine at on and off-design conditions. 2010 by ASME. http://hdl.handle.net/10204/4651 |
en_ZA |
dc.identifier.chicagocitation |
Snedden, Glen C, Dwain I Dunn, G Ingram, and D Gregory-Smith. "Performance of a generic non-axisymmetric end wall in a single stage, rotating turbine at on and off-design conditions." (2010): http://hdl.handle.net/10204/4651 |
en_ZA |
dc.identifier.vancouvercitation |
Snedden GC, Dunn DI, Ingram G, Gregory-Smith D, Performance of a generic non-axisymmetric end wall in a single stage, rotating turbine at on and off-design conditions; 2010 by ASME; 2010. http://hdl.handle.net/10204/4651 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Snedden, Glen C
AU - Dunn, Dwain I
AU - Ingram, G
AU - Gregory-Smith, D
AB - The application of non-axisymmetric end walls in turbine stages has gained wide spread acceptance as a means to improve the performance of turbines in both power generation and aero-derivative applications. Non-axisymmetric end walls are aimed at the control of secondary flows and to a large extent have been developed through the use of computational fluid dynamics and detailed measurements in linear and annular cascades and proven in full scale engine tests. Little or no literature is available describing their performance at conditions other than design. This study utilises 5-hole probe measurements in a low speed, model turbine in conjunction with computational fluid dynamics to gain a more detailed understanding of the influence of a generic end wall design on the structure of secondary flows at both on and off-design flow conditions. Results indicate a 0.4% improvement in rotor efficiency at design but this was reduced at off design and at higher loading the rotor efficiency was reduced by 0.5%. Stage efficiencies were improved for all conditions but with a declining trend as load was increased. Experimental and CFD results are examined to investigate these findings further.
DA - 2010-06
DB - ResearchSpace
DP - CSIR
KW - Non-axisymmetric end wal
KW - Generic non-axisymmetric
KW - Rotating turbines
KW - ASME Turbo Expo 2010
LK - https://researchspace.csir.co.za
PY - 2010
T1 - Performance of a generic non-axisymmetric end wall in a single stage, rotating turbine at on and off-design conditions
TI - Performance of a generic non-axisymmetric end wall in a single stage, rotating turbine at on and off-design conditions
UR - http://hdl.handle.net/10204/4651
ER -
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en_ZA |