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Turbulence structure in hydraulic ju...

Liu, Minnan.

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Turbulence structure in hydraulic jumps and vertical slot fishways.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Turbulence structure in hydraulic jumps and vertical slot fishways./
Author:	Liu, Minnan.
Description:	312 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-10, Section: B, page: 5329.
Contained By:	Dissertation Abstracts International65-10B.
Subject:	Engineering, Environmental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ95973
ISBN:	9780612959736

Turbulence structure in hydraulic jumps and vertical slot fishways.
Liu, Minnan.

Turbulence structure in hydraulic jumps and vertical slot fishways. - 312 p.

Source: Dissertation Abstracts International, Volume: 65-10, Section: B, page: 5329.

Thesis (Ph.D.)--University of Alberta (Canada), 2004.

This thesis is written in the paper format and includes three contributions.

ISBN: 9780612959736Subjects--Topical Terms:

783782
Engineering, Environmental.

Turbulence structure in hydraulic jumps and vertical slot fishways.
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020 $a 9780612959736
035 $a (UMI)AAINQ95973
035 $a AAINQ95973
040 $a UMI $c UMI
100 1 $a Liu, Minnan. $3 1917693
245 1 0 $a Turbulence structure in hydraulic jumps and vertical slot fishways.
300 $a 312 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-10, Section: B, page: 5329.
500 $a Advisers: David Z. Zhu; N. Rajaratnam.
502 $a Thesis (Ph.D.)--University of Alberta (Canada), 2004.
520 $a This thesis is written in the paper format and includes three contributions.
520 $a The first contribution presents the results of an experimental study on the effects of air bubbles and boundary on the measurements of MicroADV. A 16 MHz down-looking MicroADV from SonTek is used to measure the flow in hydraulic jumps. The error of mean velocity measured by MicroADV was found to increase linearly with the air concentration at very low concentrations. The boundary effect on the measurements of MicroADV starts when the distance from the measurement point to the boundary is less than about 3 cm.
520 $a The second contribution presents an experimental study on the turbulence structure of hydraulic jumps with Froude numbers of 2.0, 2.5, and 3.32. The maximum turbulence intensities and Reynolds shear stress were found to decrease rapidly with the longitudinal distance within the jump and then gradually level off in the transition region from the end of jump to open channel flow. The maximum turbulence kinetic energy at any section decreases linearly with the longitudinal distance within the jump and gradually levels off in the transition region. The Reynolds shear stress and turbulence intensities within the jump show some degree of similarity.
520 $a The third contribution presents the results on the turbulence structure of flow in vertical slot fishways with slopes of 5.06 and 10.52%. Two flow patterns existed and for each one two flow regions were formed in the pools: jet flow and recirculating flow. The mean kinetic energy decays rapidly in a small area in the jet region and the dissipation rate in most of the areas in the pool is less than 0.2 m2/s3. For the jet flow, the non-dimensional mean velocity profile agrees very well with that of a plane turbulent jet in the center part with some scatter at the ends. The jet has no potential core and its maximum velocity decays faster than that of a plane turbulent jet. The jet presents different turbulence structure for the two flow patterns and for each pattern the turbulence characteristics appear different between the left and right halves of the jet.
590 $a School code: 0351.
650 4 $a Engineering, Environmental. $3 783782
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
690 $a 0775
690 $a 0792
710 2 0 $a University of Alberta (Canada). $3 626651
773 0 $t Dissertation Abstracts International $g 65-10B.
790 1 0 $a Zhu, David Z., $e advisor
790 1 0 $a Rajaratnam, N., $e advisor
790 $a 0351
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ95973