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Experimental studies of fluid-solid flows in turbulent dilute and laminar concentrated regimes.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Experimental studies of fluid-solid flows in turbulent dilute and laminar concentrated regimes./
Author:	Mena, Sarah Elizabeth.
Description:	1 online resource (289 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.
Contained By:	Dissertation Abstracts International78-05B(E).
Subject:	Chemical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9781369420456

Experimental studies of fluid-solid flows in turbulent dilute and laminar concentrated regimes.
Mena, Sarah Elizabeth.

Experimental studies of fluid-solid flows in turbulent dilute and laminar concentrated regimes. - 1 online resource (289 pages)

Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

Mixtures of liquid and solids are present in many engineering and geological processes such as hydraulic conveying, energy conversion and the consolidation of soil sediments. Although they are widespread, our understanding of their fluid mechanics behavior is not complete partly due to a lack of experimental data. This data is needed for the development of engineering models that can optimize industrial operations, reduce energy demands and predict undesirable processes like erosion and underground instabilities. The objective of the present dissertation is to obtain experimental data to help better understand these flows in two different configurations: dilute flows in pipes and dense flows in fluidized beds.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369420456Subjects--Topical Terms:

555952
Chemical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Experimental studies of fluid-solid flows in turbulent dilute and laminar concentrated regimes.
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100 1 $a Mena, Sarah Elizabeth. $3 1180411
245 1 0 $a Experimental studies of fluid-solid flows in turbulent dilute and laminar concentrated regimes.
264 0 $c 2016
300 $a 1 online resource (289 pages)
336 $a text $b txt $2 rdacontent
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500 $a Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.
500 $a Adviser: Jennifer Sinclair Curtis.
502 $a Thesis (Ph.D.) $c University of Florida $d 2016.
504 $a Includes bibliographical references
520 $a Mixtures of liquid and solids are present in many engineering and geological processes such as hydraulic conveying, energy conversion and the consolidation of soil sediments. Although they are widespread, our understanding of their fluid mechanics behavior is not complete partly due to a lack of experimental data. This data is needed for the development of engineering models that can optimize industrial operations, reduce energy demands and predict undesirable processes like erosion and underground instabilities. The objective of the present dissertation is to obtain experimental data to help better understand these flows in two different configurations: dilute flows in pipes and dense flows in fluidized beds.
520 $a The pipe flow study deals with turbulent flow in the intermediate to inertia dominated regime as characterized by the Stokes number. Velocity profiles for each phase and for the three velocity components were acquired in a pilot scale facility using Laser Doppler Velocimetry (LDV) for flows with particles up to 5 mm in diameter at concentrations from 0.7-2% V/V. In general, the presence of the particles flattened the mean liquid profile and augmented the turbulence intensity in the core region of the pipe. The mean particle profile is much flatter than the fluid with a maximum relative velocity at the center. The particle fluctuation profile is much flatter than the fluid suggesting a fairly uniform solid volume fraction across the pipe. The effect of the Reynolds number is marked with fluctuations being reduced with increasing Reynolds numbers.
520 $a The fluidized bed study focuses on experiments for localized fluidization. High speed videos of the process were collected away from boundaries using Planar Laser Induced Fluorescence (PLIF) and Refractive Index Matching (RIM). The influence of several parameters including the size of the particles, the initial bed height and the diameter of the injection port, were studied. A saturation in the flow rate required to achieve fluidization was observed as the bed height increased, corresponding to a change from localized to homogeneous fluidization. The injection port diameter influences the onset of fluidization for smaller bed heights and the range of flow rates where a fluidized cavity can be observed.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Chemical engineering. $3 555952
650 4 $a Mechanical engineering. $3 557493
655 7 $a Electronic books. $2 local $3 554714
690 $a 0542
690 $a 0548
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Florida. $3 845432
773 0 $t Dissertation Abstracts International $g 78-05B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10299022 $z click for full text (PQDT)