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Investigation of Turbulence in Granu...

Abdelrahman, Mohamed.

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Investigation of Turbulence in Granular Flow.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Investigation of Turbulence in Granular Flow./
作者:	Abdelrahman, Mohamed.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:	93 p.
附註:	Source: Masters Abstracts International, Volume: 56-04.
Contained By:	Masters Abstracts International56-04(E).
標題:	Mechanical engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10275044
ISBN:	9781369730197

Investigation of Turbulence in Granular Flow.
Abdelrahman, Mohamed.

Investigation of Turbulence in Granular Flow. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 93 p.

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)--The University of North Carolina at Charlotte, 2017.

Granular flow poses interesting questions in terms of both theoretical and applied mechanics. The increased utilization of vibrational finishing processes in the manufacturing of high precision components has resulted in an increased need to understand the behavior of granular fluids, particularly how granular fluids behave in vortex dominated turbulent flow. In this study, Particle Image Velocimetry (PIV) velocity data of various granular media flows are used to obtain the turbulence spectra. The turbulence spectra obtained for the various granular media are compared to the Kolmogorov turbulence spectrum observed in the flow of molecular liquids, to gain a greater understanding of how granular media behave in turbulent flow relative to the behavior of molecular liquids.

ISBN: 9781369730197Subjects--Topical Terms:

649730
Mechanical engineering.

Investigation of Turbulence in Granular Flow.
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520 $a Granular flow poses interesting questions in terms of both theoretical and applied mechanics. The increased utilization of vibrational finishing processes in the manufacturing of high precision components has resulted in an increased need to understand the behavior of granular fluids, particularly how granular fluids behave in vortex dominated turbulent flow. In this study, Particle Image Velocimetry (PIV) velocity data of various granular media flows are used to obtain the turbulence spectra. The turbulence spectra obtained for the various granular media are compared to the Kolmogorov turbulence spectrum observed in the flow of molecular liquids, to gain a greater understanding of how granular media behave in turbulent flow relative to the behavior of molecular liquids.
520 $a The turbulence spectra obtained in this study show that the granular media flows analyzed exhibited similar vortex breakdown and energy dissipation to what is normally observed in the turbulent flow of molecular liquids, therefore demonstrating that densely packed granular media behave similarly to molecular liquids when undergoing turbulent flow. These findings provide strong evidence to support the hypothesis that the observable random grain dynamics in densely packed grain media are equivalent to the unobservable random molecular dynamics present in the turbulent flow of molecular liquids.
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