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Characteristics of two-dimensional flow around a rotating circular cylinder near a plane wall
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10.1063/1.2738608
/content/aip/journal/pof2/19/6/10.1063/1.2738608
http://aip.metastore.ingenta.com/content/aip/journal/pof2/19/6/10.1063/1.2738608

Figures

Image of FIG. 1.
FIG. 1.

Flow configuration schematics.

Image of FIG. 2.
FIG. 2.

Instantaneous streamlines of flow past an impulsively started rotating and moving circular cylinder at . (a) and (b) . The results obtained by the LBM (left), semianalytical method (Ref. 2) (center), and experimental flow visualization (Ref. 2) (right) at different times.

Image of FIG. 3.
FIG. 3.

Comparison of velocity profiles with the results of Badr and Dennis (Ref. 2) at and . (a) The component velocity on . (b) The component of velocity on .

Image of FIG. 4.
FIG. 4.

Time evolution of the lift and drag coefficients for flow past an impulsively started rotating and translating circular cylinder at and and 1.0. The lines and symbols present the LBE and finite difference (Ref. 3) results, respectively.

Image of FIG. 5.
FIG. 5.

Instantaneous streak lines of the flow past a rotating circular cylinder near a flat wall with , , and different . (a) , (b) , (c) , (d) , (e) , (f) , and (g) .

Image of FIG. 6.
FIG. 6.

Similar to Fig. 5 with . (a) , (b) , (c) , and (d) .

Image of FIG. 7.
FIG. 7.

Similar to Fig. 5, with . (a) , (b) , (c) , (d) , (e) , (f) , and (g) .

Image of FIG. 8.
FIG. 8.

Similar to Fig. 5 with . (a) , (b) , (c) , and (d) .

Image of FIG. 9.
FIG. 9.

Vorticity contours around a rotating circular cylinder near a flat wall during one cycle of vortex shedding. , , and (left) and 1.0 (right). (a) , (b) , (c) , (d) , and (e) .

Image of FIG. 10.
FIG. 10.

Similar to Fig. 9, with , and (left) and 1.0 (right). (a) , (b) , (c) , (d) , and (e) .

Image of FIG. 11.
FIG. 11.

The gap height dependence of the velocity field around a rotating cylinder near a flat wall with (left) and (right). (a) , (b) , (c) , (d) , and (e) .

Image of FIG. 12.
FIG. 12.

The dependence of the mean surface pressure distribution on the rotation rate . (a) , (b) , (c) , and (d) .

Image of FIG. 13.
FIG. 13.

Dependence on of the time history of and and the trajectory of the force with . (a) , (b) , (c) , (d) , and (e) .

Image of FIG. 14.
FIG. 14.

Similar to Fig. 13, with at different . (a) , (b) , (c) , and (d) .

Image of FIG. 15.
FIG. 15.

Similar to Fig. 13, with at different . (a) , (b) , (c) , and (d) .

Image of FIG. 16.
FIG. 16.

Similar to Fig. 13, with at different . (a) , (b) , (c) , and (d) .

Image of FIG. 17.
FIG. 17.

Dependence of variations of the lift and drag coefficients on the gaps . (a) Mean value of the drag coefficient , (b) mean value of the lift coefficient , (c) root-mean-square values of the lift and drag coefficients, and , and (d) the ratio of mean lift and mean drag coefficients, .

Image of FIG. 18.
FIG. 18.

The near-wake vortex structure in parameter space.

Tables

Generic image for table
Table I.

Flow past a rotating cylinder at , and 1.0. The mean drag and mean lift coefficients, and , and the Strouhal number St, obtained by the finite difference (FD) method (Ref. 3), finite element (FE) method (Ref. 7), and the LBE method in the present work.

Generic image for table
Table II.

Dependence of the minimum averaged surface pressure on and , corresponding to Figs. 12(a) and 12(b).

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/content/aip/journal/pof2/19/6/10.1063/1.2738608
2007-06-12
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Characteristics of two-dimensional flow around a rotating circular cylinder near a plane wall
http://aip.metastore.ingenta.com/content/aip/journal/pof2/19/6/10.1063/1.2738608
10.1063/1.2738608
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