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Laminar flow over a steadily rotating circular cylinder under the influence of uniform shear
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10.1063/1.2189293
/content/aip/journal/pof2/18/4/10.1063/1.2189293
http://aip.metastore.ingenta.com/content/aip/journal/pof2/18/4/10.1063/1.2189293

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of uniform-shear flow over a steadily rotating circular cylinder, including the computational domain.

Image of FIG. 2.
FIG. 2.

(a) Variation of with in the range of according to and for the flow at . (b) Comparison of the present result with the previous published data in the case of and [ for Mittal and Kumar (Ref. 7)].

Image of FIG. 3.
FIG. 3.

(a) Variation of with in the range of according to and for the flow at . (b) Comparison of the present result with the previous published data in the case of and [ for Mittal and Kumar (Ref. 7)].

Image of FIG. 4.
FIG. 4.

(a) Variation of with in the range of according to and for the flow at . (b) Comparison of the present result with the previous published data in the case of and [ for Mittal and Kumar (Ref. 7)].

Image of FIG. 5.
FIG. 5.

(a) Variation of with in the range of according to and for the flow at . (b) Comparison of the present result with the previous published data in the case of and [ for Mittal and Kumar (Ref. 7)]. Note that the data of Mittal and Kumar (Ref. 7) are given in the form of the rms value, .

Image of FIG. 6.
FIG. 6.

(a) Variation of with in the range of according to and for the flow at . (b) Comparison of the present result with the previous published data in the case of and [ for Mittal and Kumar (Ref. 7)]. Note that the data of Mittal and Kumar (Ref. 7) are given in the form of the rms value, .

Image of FIG. 7.
FIG. 7.

Mean pressure coefficients around the cylinder surface according to and for the flow at in the range of . Note that (b) is the enlargement of (a).

Image of FIG. 8.
FIG. 8.

Mean vorticities around the cylinder surface according to and for the flow at in the range of . Note that (b) is the enlargement of (a).

Image of FIG. 9.
FIG. 9.

Instantaneous vorticity contours at the time of the maximum lift according to in the range of for the flow at and : (a) , (b) , (c) , (d) 0, (e) 1, (f) 1.6, and (g) 2.5.

Image of FIG. 10.
FIG. 10.

Instantaneous vorticity contours at the time of the maximum lift according to and for the flow at : (a) and (b) 1.

Image of FIG. 11.
FIG. 11.

Variation of with in the range of according to for the flow at and , compared with the result of Stojković et al. [2003 (Ref. 6)] (presented by the dotted line).

Image of FIG. 12.
FIG. 12.

Variations of and with in the range of according to for the flow at and : (a) and (b) .

Image of FIG. 13.
FIG. 13.

Variations of and with in the range of according to for the flow at and : (a) and (b) .

Tables

Generic image for table
Table I.

Flow conditions used in previous studies. analysis and measurement.

Generic image for table
Table II.

Validation of the numerical method: parametric studies for uniform-shear flow over a steadily rotating circular cylinder at and in the case of . Here, parenthetical entries are the relative errors (%) with respect to the result from and .

Generic image for table
Table III.

Validation of the numerical method: comparison study for uniform flow over a steadily rotating circular cylinder at .

Generic image for table
Table IV.

Critical rotational speeds, and , in the range of according to and for the flow at . This shows that von Kármán vortex shedding occurs for whereas otherwise it does not.

Generic image for table
Table V.

Variation of the mean lift coefficient with the rotational speed in the range of according to and for the flow at , provided by the least-square fit for .

Generic image for table
Table VI.

Critical rotational speeds, , , , and , in the range of according to for the flow at in the case of . This shows that the second vortex shedding occurs in the range of for the clockwise rotation and in the range of for the counterclockwise rotation, whereas otherwise it does not.

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/content/aip/journal/pof2/18/4/10.1063/1.2189293
2006-04-19
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Laminar flow over a steadily rotating circular cylinder under the influence of uniform shear
http://aip.metastore.ingenta.com/content/aip/journal/pof2/18/4/10.1063/1.2189293
10.1063/1.2189293
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