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The Effects of Non-Universal Large S...

Blum, Daniel Brian.

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The Effects of Non-Universal Large Scales on Conditional Statistics in Turbulence.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	The Effects of Non-Universal Large Scales on Conditional Statistics in Turbulence./
作者:	Blum, Daniel Brian.
面頁冊數:	125 p.
附註:	Source: Dissertation Abstracts International, Volume: 72-10, Section: B, page: 6067.
Contained By:	Dissertation Abstracts International72-10B.
標題:	Physics, Fluid and Plasma. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3467917
ISBN:	9781124812007

The Effects of Non-Universal Large Scales on Conditional Statistics in Turbulence.
Blum, Daniel Brian.

The Effects of Non-Universal Large Scales on Conditional Statistics in Turbulence. - 125 p.

Source: Dissertation Abstracts International, Volume: 72-10, Section: B, page: 6067.

Thesis (Ph.D.)--Wesleyan University, 2011.

We report measurements of conditional Eulerian and Lagrangian structure functions in order to assess the effects of nonuniversal properties of the large scales on the small scales in turbulence. We study a 1x1x1.5 m.

ISBN: 9781124812007Subjects--Topical Terms:

1018402
Physics, Fluid and Plasma.

The Effects of Non-Universal Large Scales on Conditional Statistics in Turbulence.
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245 1 4 $a The Effects of Non-Universal Large Scales on Conditional Statistics in Turbulence.
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500 $a Source: Dissertation Abstracts International, Volume: 72-10, Section: B, page: 6067.
500 $a Adviser: Greg Voth.
502 $a Thesis (Ph.D.)--Wesleyan University, 2011.
520 $a We report measurements of conditional Eulerian and Lagrangian structure functions in order to assess the effects of nonuniversal properties of the large scales on the small scales in turbulence. We study a 1x1x1.5 m.
520 $a 3 flowbetween oscillating grids which produces Taylor Reynold's number of 285 while containing regions of nearly homogeneous and highly inhomogeneous turbulence. Large data sets of three-dimensional tracer particle velocities have been collected using stereoscopic high speed cameras with real-time image compression technology. Eulerian and Lagrangian structure functions are measured in both homogeneous and inhomogeneous regions of the flow. We condition the structure functions on the instantaneous large scale velocity or on the grid phase. At all scales, the structure functions depend strongly on the large scale velocity, but are independent of the grid phase. We see clear signatures of inhomogeneity near the oscillating grids, but even in the homogeneous region in the center we see a surprisingly strong dependence on the large scale velocity that remains at all scales. We also find strong signatures of large scale intermittency. Additionally, 7 other turbulent flows are compared using conditional structure functions to further the understanding of the effects of large scale properties of the flow. Previous work has shown that similar correlations extend to very high Reynolds numbers. Comprehensive measurements of these effects in a laboratory flow provide a powerful tool for assessing the effects of shear, inhomogeneity and intermittency of the large scales on the small scales in turbulence.
590 $a School code: 0255.
650 4 $a Physics, Fluid and Plasma. $3 1018402
690 $a 0759
710 2 $a Wesleyan University. $3 1058128
773 0 $t Dissertation Abstracts International $g 72-10B.
790 $a 0255
791 $a Ph.D.
792 $a 2011
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3467917