Application of modified log-wake law in open-channels

Junke Guo; Pierre Y. Julien

doi:10.1061/40856(200)200

Application of modified log-wake law in open-channels

Junke Guo, Pierre Y. Julien

Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

We extend the modified log-wake law, which was developed for turbulent pipe and boundary layer flows, to open-channel turbulence. Like those in pipes and boundary layers, turbulent velocity profile in open-channels can be approximated with three components: (1) the law of the wall that results from the constant bed shear stress; (2) the law of the wake that reflects the effects of gravity, secondary currents and bed roughness; and (3) the cubic correction near the maximum velocity. The modified log-wake law compares very well with experimental data from Coleman, Lyn, Kironoto and Graf and Sarma et al. It also replicates the measured velocity profile of cross-section of the Mississippi River. In particular, it can well model the velocity dip phenomenon in open-channels where the conventional log-wake law fails.

Original language	English (US)
Title of host publication	Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006
DOIs	https://doi.org/10.1061/40856(200)200
State	Published - 2007
Event	World Environmental and Water Resources Congress 2006: Examining the Confluence of Environmental and Water Concerns - Omaha, NE, United States Duration: May 21 2006 → May 25 2006

Publication series

Name	Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006

Conference

Conference	World Environmental and Water Resources Congress 2006: Examining the Confluence of Environmental and Water Concerns
Country	United States
City	Omaha, NE
Period	5/21/06 → 5/25/06

Keywords

Flow measurement
Open channel flow
River flow

ASJC Scopus subject areas

Environmental Science(all)

Access to Document

10.1061/40856(200)200

Fingerprint Dive into the research topics of 'Application of modified log-wake law in open-channels'. Together they form a unique fingerprint.

Cite this

Guo, J., & Julien, P. Y. (2007). Application of modified log-wake law in open-channels. In Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006 [200] (Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006). https://doi.org/10.1061/40856(200)200

Application of modified log-wake law in open-channels. / Guo, Junke; Julien, Pierre Y.

Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006. 2007. 200 (Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Guo, J & Julien, PY 2007, Application of modified log-wake law in open-channels. in Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006., 200, Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006, World Environmental and Water Resources Congress 2006: Examining the Confluence of Environmental and Water Concerns, Omaha, NE, United States, 5/21/06. https://doi.org/10.1061/40856(200)200

Guo J, Julien PY. Application of modified log-wake law in open-channels. In Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006. 2007. 200. (Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006). https://doi.org/10.1061/40856(200)200

@inproceedings{2fec01f558254678a80e9b665fbd099c,

title = "Application of modified log-wake law in open-channels",

abstract = "We extend the modified log-wake law, which was developed for turbulent pipe and boundary layer flows, to open-channel turbulence. Like those in pipes and boundary layers, turbulent velocity profile in open-channels can be approximated with three components: (1) the law of the wall that results from the constant bed shear stress; (2) the law of the wake that reflects the effects of gravity, secondary currents and bed roughness; and (3) the cubic correction near the maximum velocity. The modified log-wake law compares very well with experimental data from Coleman, Lyn, Kironoto and Graf and Sarma et al. It also replicates the measured velocity profile of cross-section of the Mississippi River. In particular, it can well model the velocity dip phenomenon in open-channels where the conventional log-wake law fails.",

keywords = "Flow measurement, Open channel flow, River flow",

author = "Junke Guo and Julien, {Pierre Y.}",

year = "2007",

doi = "10.1061/40856(200)200",

language = "English (US)",

isbn = "0784408564",

series = "Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006",

booktitle = "Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006",

note = "World Environmental and Water Resources Congress 2006: Examining the Confluence of Environmental and Water Concerns ; Conference date: 21-05-2006 Through 25-05-2006",

}

TY - GEN

T1 - Application of modified log-wake law in open-channels

AU - Guo, Junke

AU - Julien, Pierre Y.

PY - 2007

Y1 - 2007

N2 - We extend the modified log-wake law, which was developed for turbulent pipe and boundary layer flows, to open-channel turbulence. Like those in pipes and boundary layers, turbulent velocity profile in open-channels can be approximated with three components: (1) the law of the wall that results from the constant bed shear stress; (2) the law of the wake that reflects the effects of gravity, secondary currents and bed roughness; and (3) the cubic correction near the maximum velocity. The modified log-wake law compares very well with experimental data from Coleman, Lyn, Kironoto and Graf and Sarma et al. It also replicates the measured velocity profile of cross-section of the Mississippi River. In particular, it can well model the velocity dip phenomenon in open-channels where the conventional log-wake law fails.

AB - We extend the modified log-wake law, which was developed for turbulent pipe and boundary layer flows, to open-channel turbulence. Like those in pipes and boundary layers, turbulent velocity profile in open-channels can be approximated with three components: (1) the law of the wall that results from the constant bed shear stress; (2) the law of the wake that reflects the effects of gravity, secondary currents and bed roughness; and (3) the cubic correction near the maximum velocity. The modified log-wake law compares very well with experimental data from Coleman, Lyn, Kironoto and Graf and Sarma et al. It also replicates the measured velocity profile of cross-section of the Mississippi River. In particular, it can well model the velocity dip phenomenon in open-channels where the conventional log-wake law fails.

KW - Flow measurement

KW - Open channel flow

KW - River flow

UR - http://www.scopus.com/inward/record.url?scp=84858591660&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84858591660&partnerID=8YFLogxK

U2 - 10.1061/40856(200)200

DO - 10.1061/40856(200)200

M3 - Conference contribution

AN - SCOPUS:84858591660

SN - 0784408564

SN - 9780784408568

T3 - Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006

BT - Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006

T2 - World Environmental and Water Resources Congress 2006: Examining the Confluence of Environmental and Water Concerns

Y2 - 21 May 2006 through 25 May 2006

ER -