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.
Turbulence structure and turbulence kinetic energy transport in multiscale/fractal-generated turbulence
Rent:
Rent this article for
USD
10.1063/1.4811402
/content/aip/journal/pof2/25/6/10.1063/1.4811402
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/6/10.1063/1.4811402

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the test section and coordinate system used in this study.

Image of FIG. 2.
FIG. 2.

Schematic of the fractal grid and measurement region for the cross-sectional profiles [shaded area (colored area online)]. The reverse flow rates are measured along straight lines that are parallel to the -axis and that cut the grid plane at points a and b. The measurements in Fig. 10 are taken along straight lines that are parallel to the -axis and that cut the grid plane at points c and d (following MV ).

Image of FIG. 3.
FIG. 3.

Downstream profiles of the reverse flow rate.

Image of FIG. 4.
FIG. 4.

Streamwise evolution of the mean velocity along the centerline, normalized by the initial mean velocity plateau .

Image of FIG. 5.
FIG. 5.

Streamwise evolution of the turbulence intensity along the centerline, normalized by its value at = .

Image of FIG. 6.
FIG. 6.

Streamwise evolution of (a) the skewness and (b) the flatness of the longitudinal fluctuating component along the centerline. The range of measurement error is shown by error bars.

Image of FIG. 7.
FIG. 7.

Streamwise evolution of (a) the longitudinal integral length scale normalized by , (b) the Taylor microscale λ normalized by , and (c) the length-scale ratio /λ along the centerline. The range of measurement error is shown by error bars.

Image of FIG. 8.
FIG. 8.

Streamwise evolution of the turbulent Reynolds number along the centerline. The range of measurement error is shown by error bars.

Image of FIG. 9.
FIG. 9.

Cross-sectional profiles of the mean velocity / . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 10.
FIG. 10.

Streamwise evolution of the ratios / and . The broken lines indicate a ±5% difference.

Image of FIG. 11.
FIG. 11.

Cross-sectional profiles of the longitudinal rms velocity ′/ . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 12.
FIG. 12.

Cross-sectional profiles of the vertical rms velocity ′/ . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 13.
FIG. 13.

Cross-sectional profiles of the spanwise rms velocity ′/ . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 14.
FIG. 14.

Cross-sectional profiles of the large-scale anisotropy ′/′. From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 15.
FIG. 15.

Cross-sectional profiles of the Reynolds shear stress . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 16.
FIG. 16.

Cross-sectional profiles of the turbulence kinetic energy . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 17.
FIG. 17.

Cross-sectional profiles of the dissipation rate ɛ. From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942. The units are m/s.

Image of FIG. 18.
FIG. 18.

Cross-sectional profiles of the skewness . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 19.
FIG. 19.

Cross-sectional profiles of the flatness . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 20.
FIG. 20.

Cross-sectional profiles of the longitudinal integral length scale / . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 21.
FIG. 21.

Cross-sectional profiles of the Taylor microscale λ/ . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 22.
FIG. 22.

Cross-sectional profiles of the length-scale ratio /λ. From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 23.
FIG. 23.

Cross-sectional profiles of the turbulent Reynolds number . From the upper left to the lower right, the locations are / = 0.05, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, and 0.942.

Image of FIG. 24.
FIG. 24.

Cross-sectional profiles of the advection term . From the upper left to the lower right, the locations are / = 0.1, 0.2, 0.3, 0.45, 0.6, and 0.75. The units are percentages.

Image of FIG. 25.
FIG. 25.

Cross-sectional profiles of the production term . From the upper left to the lower right, the locations are / = 0.1, 0.2, 0.3, 0.45, 0.6, and 0.75. The units are percentages.

Image of FIG. 26.
FIG. 26.

Cross-sectional profiles of the viscous diffusion term . From the upper left to the lower right, the locations are / = 0.1, 0.2, 0.3, 0.45, 0.6, and 0.75. The units are percentages.

Image of FIG. 27.
FIG. 27.

Cross-sectional profiles of the triple-correlation transport term . From the upper left to the lower right, the locations are / = 0.1, 0.2, 0.3, 0.45, 0.6, and 0.75. The units are percentages.

Image of FIG. 28.
FIG. 28.

Cross-sectional profiles of the pressure transport term Π. From the upper left to the lower right, the locations are / = 0.1, 0.2, 0.3, 0.45, 0.6, and 0.75. The units are percentages.

Tables

Generic image for table
Table I.

Geometry of the space-filling fractal square grids and Reynolds number of the flow.

Loading

Article metrics loading...

/content/aip/journal/pof2/25/6/10.1063/1.4811402
2013-06-24
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Turbulence structure and turbulence kinetic energy transport in multiscale/fractal-generated turbulence
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/6/10.1063/1.4811402
10.1063/1.4811402
SEARCH_EXPAND_ITEM