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.
Effects of Reynolds number on some properties of a turbulent jet from a long square pipe
Rent:
Rent this article for
USD
10.1063/1.4797456
/content/aip/journal/pof2/25/3/10.1063/1.4797456
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/3/10.1063/1.4797456
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the experimental arrangement (left) and three-dimensional square jet nozzle exit, jet notation and coordinate system (right).

Image of FIG. 2.
FIG. 2.

Inflow conditions at / = 0.05 for different Reynolds numbers. (a) Normalized mean velocity; (b) turbulence intensity. Note that the inset panel indicates location (Y) used for integral calculations (see Eqs. (4) and (5) ).

Image of FIG. 3.
FIG. 3.

Dependences of (a) displacement thicknesses () and (b) momentum thickness () on Reynolds number and integral upper limit (Y), Figure 2 and Eqs. (4) and (5) .

Image of FIG. 4.
FIG. 4.

Streamwise variations of / for Re = 8000 ∼ 50 000.

Image of FIG. 5.
FIG. 5.

Dependence on Re of (open symbol) and / (closed symbol).

Image of FIG. 6.
FIG. 6.

Lateral distributions of / for Re = 8000–50 000.

Image of FIG. 7.
FIG. 7.

Streamwise variations of / for Re = 8000 ∼ 50 000.

Image of FIG. 8.
FIG. 8.

Dependence of the spreading rate ( ) and virtual origin ( / ) on Re.

Image of FIG. 9.
FIG. 9.

Normalized streamwise RMS velocity / along the centreline.

Image of FIG. 10.
FIG. 10.

Re dependence of the asymptotic value of turbulence intensity.

Image of FIG. 11.
FIG. 11.

Lateral distributions of / for (a) Re = 8000, (b) = 12 000, (c) Re = 20 000; (d) Re = 30 000, (e) Re = 50 000.

Image of FIG. 12.
FIG. 12.

Streamwise evolution of skewness for Re = 8000–50 000.

Image of FIG. 13.
FIG. 13.

Streamwise evolution of flatness for Re = 8000–50 000.

Image of FIG. 14.
FIG. 14.

Dependence of asymptotic value of and .

Image of FIG. 15.
FIG. 15.

Centreline spectra Φ of velocity fluctuation between / = 1 and / = 10 for (a) Re = 8000, (b) Re = 12 000, (c) Re = 20 000, (d) Re = 30 000, (e) Re = 50 000.

Image of FIG. 16.
FIG. 16.

Dependence of the Strouhal number St = / on Re. Note that the values of the St are those of that correspond to peaks of Φ between / = 2 and / = 5 as indicated in Fig. 14 by the dashed lines.

Image of FIG. 17.
FIG. 17.

Evolution of the centreline Φ obtained at / = 20, 30 and 40 in the form of fΦ vs log ( / ) for (a) Re = 8000, (b) Re = 12 000, (c) Re = 20 000, (d) Re = 30 000, (e) Re = 50 000.

Image of FIG. 18.
FIG. 18.

Dependence of = / on Re.

Image of FIG. 19.
FIG. 19.

Reynolds number dependent spectra of the centreline measured at / = 30.

Image of FIG. 20.
FIG. 20.

Compensated velocity spectra Φ of the centreline measured at / = 30 for (a) = 5/3, and (b) = 1.31–1.56.

Image of FIG. 21.
FIG. 21.

The R dependence of the power-law exponent of Φ, all for x/D = 30.

Loading

Article metrics loading...

/content/aip/journal/pof2/25/3/10.1063/1.4797456
2013-03-28
2014-04-17
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of Reynolds number on some properties of a turbulent jet from a long square pipe
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/3/10.1063/1.4797456
10.1063/1.4797456
SEARCH_EXPAND_ITEM