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Flow past two rotating cylinders
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10.1063/1.3528260
/content/aip/journal/pof2/23/1/10.1063/1.3528260
http://aip.metastore.ingenta.com/content/aip/journal/pof2/23/1/10.1063/1.3528260
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the problem.

Image of FIG. 2.
FIG. 2.

Schematic of the experimental setup for flow visualization and PIV experiments. (a) Top view. (b) Side view. Platinum wire and graphite anode were absent for PIV studies.

Image of FIG. 3.
FIG. 3.

Wake structure at , , and inward rotation case for various values of rotation rates, .

Image of FIG. 4.
FIG. 4.

Wake structure at , , and outward rotation case for various values of rotation rates, .

Image of FIG. 5.
FIG. 5.

Two shedding modes for inward rotation case at , , and . (a) In-phase mode. (b) Antiphase mode.

Image of FIG. 6.
FIG. 6.

Two shedding modes for inward rotation case at , , and . (a) In-phase mode. (b) Antiphase mode.

Image of FIG. 7.
FIG. 7.

Wake structure at , , and inward rotation case for various values of rotation rates, .

Image of FIG. 8.
FIG. 8.

Two shedding modes for outward rotation case at and . (a) , (b) , and (c) . The wake structure on the left is antiphase mode and on the right is in-phase mode.

Image of FIG. 9.
FIG. 9.

Wake structure at , , and outward rotation case for various values of rotation rates, .

Image of FIG. 10.
FIG. 10.

Two shedding modes for inward rotation case at and . (a) , (b) . The wake structure on the left is antiphase mode and on the right is in-phase mode.

Image of FIG. 11.
FIG. 11.

Wake structure at , , and inward rotation case for various values of rotation rates, .

Image of FIG. 12.
FIG. 12.

Two shedding modes for outward rotation case at and : (a) , (b) , and (c) . The wake structure on the left is antiphase mode and on the right is in-phase mode.

Image of FIG. 13.
FIG. 13.

Wake structure at , , and outward rotation case for various values of rotation rates, .

Image of FIG. 14.
FIG. 14.

Wake structure just before vortex shedding suppression and at vortex shedding suppression in outward rotation case for and various values of . The images on the right show vortex shedding suppression.

Image of FIG. 15.
FIG. 15.

Inward rotation case: variation of critical value of rotation rate for vortex shedding suppression, , with cylinder spacing, , for various values of Reynolds numbers. The lines connecting the data points show variation trend.

Image of FIG. 16.
FIG. 16.

Outward rotation case: variation of critical value of rotation rate for vortex shedding suppression, , with cylinder spacing, , for various values of Reynolds numbers. The lines connecting the data points show variation trend.

Image of FIG. 17.
FIG. 17.

Instantaneous vorticity field before and after vortex shedding suppression for inward rotation case with and . (a)Vorticity field before suppression at . (b) Vorticity field after suppression at .

Image of FIG. 18.
FIG. 18.

Instantaneous vorticity field before and after vortex shedding suppression for outward rotation case with and . (a) Vorticity field before suppression at . (b) Vorticity field after suppression at .

Image of FIG. 19.
FIG. 19.

Normalized circulation for inward rotation case with and . The lines show the variation trend.

Image of FIG. 20.
FIG. 20.

Normalized circulation for outward rotation case with and . The lines show the variation trend.

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/content/aip/journal/pof2/23/1/10.1063/1.3528260
2011-01-03
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Flow past two rotating cylinders
http://aip.metastore.ingenta.com/content/aip/journal/pof2/23/1/10.1063/1.3528260
10.1063/1.3528260
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