dc.contributor.author |
Alam, Md. Mahbub
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dc.contributor.author |
Meyer, Josua P.
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dc.date.accessioned |
2013-10-15T13:57:53Z |
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dc.date.available |
2013-10-15T13:57:53Z |
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dc.date.issued |
2013-08 |
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dc.description.abstract |
This paper comprises an in-depth physical discussion of the flow-induced vibration of two circular
cylinders in view of the time-mean lift force on stationary cylinders and interaction mechanisms. The
gap-spacing ratio T/D is varied from 0.1 to 5 and the attack angle a from 0¡ to 180¡ where T is the gap
width between the cylinders and D is the diameter of a cylinder. Mechanisms of interaction between two
cylinders are discussed based on time-mean lift, fluctuating lift, flow structures and flow-induced
responses. The whole regime is classified into seven interaction regimes, i.e., no interaction regime;
boundary layer and cylinder interaction regime; shear-layer/wake and cylinder interaction regime;
shear-layer and shear-layer interaction regime; vortex and cylinder interaction regime; vortex and
shear-layer interaction regime; and vortex and vortex interaction regime. Though a single non-interfering
circular cylinder does not correspond to a galloping following quasi-steady galloping theory, two circular
cylinders experience violent galloping vibration due to shear-layer/wake and cylinder interaction as well as
boundary layer and cylinder interaction. A larger magnitude of fluctuating lift communicates to a larger
amplitude vortex excitation. |
en |
dc.description.librarian |
hb2013 |
en |
dc.description.librarian |
ai2014 |
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dc.description.uri |
http:// www.elsevier.com/locate/jfs |
en |
dc.identifier.citation |
Alam, MM & Meyer, JP 2013, 'Global aerodynamic instability of twin cylinders in cross flow', Journal of Fluids and Structures, vol. 41, no. 8, pp. 135-145. |
en |
dc.identifier.issn |
0889-9746 (print) |
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dc.identifier.issn |
1095-8622 (online) |
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dc.identifier.other |
10.1016/j.jfluidstructs.2013.03.007 |
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dc.identifier.uri |
http://hdl.handle.net/2263/32054 |
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dc.language.iso |
en |
en |
dc.publisher |
Elsevier |
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dc.rights |
© 2013 Elsevier. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Fluids and Structures. 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 Journal of Fluids and Structures, vol. 41,no. 8, 2013, doi : 10.1016/j.jfluidstructs.2013.03.007 |
en |
dc.subject |
Forces |
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dc.subject |
Flow structures |
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dc.subject.lcsh |
Aerodynamic load |
en |
dc.subject.lcsh |
Shear flow |
en |
dc.subject.lcsh |
Lift (Aerodynamics) |
en |
dc.subject.lcsh |
Cylinders -- Aerodynamics |
en |
dc.subject.lcsh |
Cylinders -- Vibration |
en |
dc.subject.lcsh |
Fluid dynamics |
en |
dc.title |
Global aerodynamic instability of twin cylinders in cross flow |
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dc.type |
Postprint Article |
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