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Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.

Recently pervious rockfill detention dam is used as a flood mitigating structure. Analysis of hydraulics of turbulent flow through this kind of dam is mostly done using Darcy-Weisbach equation. So far, many attempts have been made to study the friction coefficient as a function of Reynolds Number i...

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Main Authors: Lee, Teang Shui, Nazemi, Allahyar, M. H., Davioudi
Format: Article
Language:English
Published: 2011
Online Access:http://psasir.upm.edu.my/id/eprint/23277/1/Friction%20Coefficient.pdf
http://psasir.upm.edu.my/id/eprint/23277/
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spelling my.upm.eprints.232772015-10-05T01:23:20Z http://psasir.upm.edu.my/id/eprint/23277/ Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam. Lee, Teang Shui Nazemi, Allahyar M. H., Davioudi Recently pervious rockfill detention dam is used as a flood mitigating structure. Analysis of hydraulics of turbulent flow through this kind of dam is mostly done using Darcy-Weisbach equation. So far, many attempts have been made to study the friction coefficient as a function of Reynolds Number in turbulent flow of clean water through pervious rockfill detention dams, while this subject has remained intact for sediment laden flow of water. In this paper relationship between friction coefficient and Reynolds Number for sediment laden flow through highly pervious rockfill dams was investigated. Required data for a regression analysis obtained by conducting a series of laboratory tests to calibrate and validate a proposed power law friction coefficient-Reynolds Number relationship. A changeable bed slop Plexiglas flume, an adjustable rate sediment feeder and a recirculating flow electro pump system were used in present study. The tests were carried out on four different rectangular laboratory rockfill dams and three different non-cohesive suspended sediments. A power law relationship was obtained with a correlation coefficient of 0.74 using two thirds of laboratory measured friction coefficient and Reynolds Number. The obtained relationship was validated employing the remaining unused data with a Mean Square Error of 0.29 which is an acceptable agreement. A new power law relationship was found between friction coefficient and Reynolds Number in sediment laden flow through pervious rockfill dams. This new relationship is the only one thus has been proposed for the sediment laden flow of water through pervious rockfill dams. 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23277/1/Friction%20Coefficient.pdf Lee, Teang Shui and Nazemi, Allahyar and M. H., Davioudi (2011) Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam. Research Journal of Environmental Sciences, 5 (7). pp. 674-681. ISSN 1819-3412 10.3923/rjes.2011.674.681
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Recently pervious rockfill detention dam is used as a flood mitigating structure. Analysis of hydraulics of turbulent flow through this kind of dam is mostly done using Darcy-Weisbach equation. So far, many attempts have been made to study the friction coefficient as a function of Reynolds Number in turbulent flow of clean water through pervious rockfill detention dams, while this subject has remained intact for sediment laden flow of water. In this paper relationship between friction coefficient and Reynolds Number for sediment laden flow through highly pervious rockfill dams was investigated. Required data for a regression analysis obtained by conducting a series of laboratory tests to calibrate and validate a proposed power law friction coefficient-Reynolds Number relationship. A changeable bed slop Plexiglas flume, an adjustable rate sediment feeder and a recirculating flow electro pump system were used in present study. The tests were carried out on four different rectangular laboratory rockfill dams and three different non-cohesive suspended sediments. A power law relationship was obtained with a correlation coefficient of 0.74 using two thirds of laboratory measured friction coefficient and Reynolds Number. The obtained relationship was validated employing the remaining unused data with a Mean Square Error of 0.29 which is an acceptable agreement. A new power law relationship was found between friction coefficient and Reynolds Number in sediment laden flow through pervious rockfill dams. This new relationship is the only one thus has been proposed for the sediment laden flow of water through pervious rockfill dams.
format Article
author Lee, Teang Shui
Nazemi, Allahyar
M. H., Davioudi
spellingShingle Lee, Teang Shui
Nazemi, Allahyar
M. H., Davioudi
Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.
author_facet Lee, Teang Shui
Nazemi, Allahyar
M. H., Davioudi
author_sort Lee, Teang Shui
title Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.
title_short Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.
title_full Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.
title_fullStr Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.
title_full_unstemmed Friction Coefficient (F)-Reynolds Number (Re) Relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.
title_sort friction coefficient (f)-reynolds number (re) relationship in non-cohesive suspended sediment laden flow through pervious rockfill dam.
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/23277/1/Friction%20Coefficient.pdf
http://psasir.upm.edu.my/id/eprint/23277/
_version_ 1643828009940025344
score 13.211869

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