The significance of coherent flow structures for the turbulent mixing ...
The significance of coherent flow structures for the turbulent mixing ...
The significance of coherent flow structures for the turbulent mixing ...
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6 Investigation <strong>of</strong> <strong>the</strong> xz-plane<br />
<strong>the</strong> negative sign <strong>of</strong> <strong>the</strong> correlation, indicated by <strong>the</strong> dashed lines, that <strong>the</strong> ejection and sweeps<br />
must be <strong>the</strong> predominant processes and <strong>the</strong> different size, shape and intensity <strong>of</strong> <strong>the</strong> functions<br />
Ë ê0- 9 ; á ìÌí Ñ ê0- 9 ;?> ìÌí ½¤Ã Ñ ê.- 9 ; á ìÌí Ë ê.- 9 ;?> ìÌí ) imply <strong>the</strong> dominance <strong>of</strong> ejection at this wall locations.<br />
(Ã<br />
In addition it can be estimated from <strong>the</strong> location <strong>of</strong> <strong>the</strong> maximum in <strong>the</strong> upper left graph that<br />
<strong>the</strong> low momentum region appears as a shear layer in -direction while <strong>the</strong> strong positive side<br />
peaks in <strong>the</strong> same figure indicate that <strong>the</strong> out<strong>flow</strong> <strong>of</strong> low-momentum fluid is associated with a<br />
secondary motion. <strong>The</strong> centre row <strong>of</strong> figure 6.14 reveals <strong>the</strong> same functions but measured at<br />
¿A¨ À and ® ¿ «¢À e.g. Ã Ë ê.-:9&;)B ìÌí Ñ ê.-:9
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