1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Interaction of a synthetic jet with the flow over a low aspect ratio cylinder
Rent:
Rent this article for
USD
10.1063/1.4811710
/content/aip/journal/pof2/25/6/10.1063/1.4811710
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/6/10.1063/1.4811710
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The circular cylinder model: (a) orientation of the axis system and jet orifice; (b) plane locations.

Image of FIG. 2.
FIG. 2.

Color contours of time-averaged streamwise velocity with superimposed in-plane velocity vectors: (a) baseline, / = 1; (b) baseline, / = 2; (c) baseline, / = 3; (d) = 0.6, / = 1; (e) = 0.6, / = 2; and (f) = 0.6, / = 3. Arrows indicate the location of the synthetic jet orifice.

Image of FIG. 3.
FIG. 3.

Color contours of time-averaged streamwise vorticity: (a) baseline, / = 1; (b) baseline, / = 2; (c) baseline, / = 3; (d) = 0.6, / = 1; (e) = 0.6, / = 2; and (f) = 0.6, / = 3. Arrows indicate the location of the synthetic jet orifice.

Image of FIG. 4.
FIG. 4.

Color contours of turbulent kinetic energy (): (a) baseline, / = 1; (b) baseline, / = 2; (c) baseline, / = 3; (d) = 0.6, / = 1; (e) = 0.6, / = 2; and (f) = 0.6, / = 3. Arrows indicate the location of the synthetic jet orifice.

Image of FIG. 5.
FIG. 5.

Streamlines in the -plane of the cylinder wake; baseline: (a) / = 1, (b) / = 2, and (c) / = 3; = 0.6 ( = 90°): (d) / = 1, (e) / = 1.5, and (f) / = 2.

Image of FIG. 6.
FIG. 6.

Streamlines in the -plane of the cylinder wake; baseline: (a) / = −0.25, (b) / = 0, and (c) / = 0.25; = 0.6 ( = 90°): (d) / = −0.25, (e) / = 0, and (f) / = 0.25.

Image of FIG. 7.
FIG. 7.

Orientation of the three spanwise planes, as interpolated from 13 streamwise planes near the jet orifice.

Image of FIG. 8.
FIG. 8.

Color contours of time-averaged spanwise velocity superimposed with in-plane velocity vectors for three spanwise locations: baseline, / = 1.4 (a), 1.5 (b), and 1.6 (c); = 0.6, / = 1.4 (d), 1.5 (e), and 1.6 (f).

Image of FIG. 9.
FIG. 9.

Contours of turbulent kinetic energy () for three spanwise locations: baseline, / = 1.4 (a), 1.5 (b), and 1.6 (c); = 0.6, / = 1.4 (d), 1.5 (e), and 1.6 (f).

Image of FIG. 10.
FIG. 10.

Color contours of normalized streamwise velocity superimposed with in-plane velocity vectors for the actuated case at = 90°: (a) time-averaged; (b) beginning of the phase-averaged cycle, = 0°; (c) phase-averaged, = 60°; (d) phase-averaged, = 120°; (e) phase-averaged, = 180°; (f) phase-averaged, = 240°; and (g) phase-averaged, = 300°.

Image of FIG. 11.
FIG. 11.

Color contours of normalized streamwise vorticity with a skip of / = 0.02 (2 mm) between each plane: (a) time-averaged; (b) beginning of the blowing portion of jet cycle, = 180°; and (c) beginning of the suction portion of the cycle, = 0°.

Image of FIG. 12.
FIG. 12.

Coherent structures near jet orifice represented by iso-contours of -criterion: (a) = 0°; (b) = 60°; (c) = 120°; (d) = 180°; (e) = 240°; and (f) = 300°.

Image of FIG. 13.
FIG. 13.

Breakdown of vortex ring around jet orifice: (a) vorticity around orifice can be represented as a coherent vortex ring; (b) impinging freestream velocity causes upstream portion of ring to lift up and (c) break off from rest of structure; (d) broken portion breaks down farther and is (e) advected downstream.

Image of FIG. 14.
FIG. 14.

Hyperbolic tangent curve fit to near surface mixing layer at three azimuthal and spanwise locations.

Loading

Article metrics loading...

/content/aip/journal/pof2/25/6/10.1063/1.4811710
2013-06-26
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interaction of a synthetic jet with the flow over a low aspect ratio cylinder
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/6/10.1063/1.4811710
10.1063/1.4811710
SEARCH_EXPAND_ITEM