Encounters with Vortices in a Turbine Nozzle Passage
Joint Authors
Rona, A.
Mahallati, A.
Gostelow, J. P.
Carscallen, W. E.
Source
International Journal of Rotating Machinery
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-14
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Experiments were conducted on the flow through a transonic turbine cascade.
Secondary flows and a wide range of vortex types were encountered, including horseshoe vortices, shock-induced passage vortices, and streamwise vortices on the suction surface.
In the separation region on the suction surface, a large rollup of passage vorticity occurred.
The blunt leading edge gave rise to strong horseshoe vortices and secondary flows.
The suction surface had a strong convex curvature over the forward portion and was quite flat further downstream.
Surface flow visualization was performed and this convex surface displayed coherent streamwise vorticity.
At subsonic speeds, strong von Kármán vortex shedding resulted in a substantial base pressure deficit.
For these conditions, time-resolved measurements were made of the Eckert-Weise energy separation in the blade wake.
At transonic speeds, exotic shedding modes were observed.
These phenomena all occurred in experiments on the flow around one particular turbine nozzle vane in a linear cascade.
American Psychological Association (APA)
Gostelow, J. P.& Mahallati, A.& Carscallen, W. E.& Rona, A.. 2012. Encounters with Vortices in a Turbine Nozzle Passage. International Journal of Rotating Machinery،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-508909
Modern Language Association (MLA)
Gostelow, J. P.…[et al.]. Encounters with Vortices in a Turbine Nozzle Passage. International Journal of Rotating Machinery No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-508909
American Medical Association (AMA)
Gostelow, J. P.& Mahallati, A.& Carscallen, W. E.& Rona, A.. Encounters with Vortices in a Turbine Nozzle Passage. International Journal of Rotating Machinery. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-508909
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-508909