Effect of seepage on the friction factor in an alluvial channel

P. Mahesh; V. Deshpande; B. Kumar

doi:10.1201/b21902-82

Effect of seepage on the friction factor in an alluvial channel

P. Mahesh, V. Deshpande, B. Kumar

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

3 Scopus citations

Abstract

In this study, an experimental approach is used to observe the effects of downward seepage on flow resistance in a threshold alluvial channel with parabolic cross sectional shape. Experiments are performed over fine and coarse sand bed channels in two categories: no seepage experiment and seepage experiment. Shear velocities are evaluated from the Reynolds shear stress distribution for both sets of experiments. Increase in the value of shear velocity is observed for the seepage experiment. Log-law of the velocity distribution in alluvial channel is modified over rough boundary with parabolic cross-sectional shape of the alluvial channel.The value of von-Karman’s constant is decreased with the application of downward seepage. Increase in turbulent production and decrease in turbulent kinetic energy dissipation are observed in the presence of downward seepage. Further, Darcy-Weisbach friction factor is calculated and increase in the flow resistance is observed under the action of downward seepage.

Original language	English
Title of host publication	Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016
Editors	Sebastien Erpicum, Benjamin Dewals, Pierre Archambeau, Michel Pirotton
Publisher	CRC Press/Balkema
Pages	473-477
Number of pages	5
ISBN (Print)	9781138029774
DOIs	https://doi.org/10.1201/b21902-82
State	Published - 1 Jan 2016
Externally published	Yes
Event	4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016 - Liege, Belgium Duration: 27 Jul 2016 → 29 Jul 2016

Publication series

Name	Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016

Conference

Conference	4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016
Country/Territory	Belgium
City	Liege
Period	27/07/16 → 29/07/16

ASJC Scopus subject areas

Ecology
Environmental Engineering

Access to Document

10.1201/b21902-82

Cite this

Mahesh, P., Deshpande, V., & Kumar, B. (2016). Effect of seepage on the friction factor in an alluvial channel. In S. Erpicum, B. Dewals, P. Archambeau, & M. Pirotton (Eds.), Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016 (pp. 473-477). (Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016). CRC Press/Balkema. https://doi.org/10.1201/b21902-82

Mahesh, P. ; Deshpande, V. ; Kumar, B. / Effect of seepage on the friction factor in an alluvial channel. Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016. editor / Sebastien Erpicum ; Benjamin Dewals ; Pierre Archambeau ; Michel Pirotton. CRC Press/Balkema, 2016. pp. 473-477 (Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016).

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title = "Effect of seepage on the friction factor in an alluvial channel",

abstract = "In this study, an experimental approach is used to observe the effects of downward seepage on flow resistance in a threshold alluvial channel with parabolic cross sectional shape. Experiments are performed over fine and coarse sand bed channels in two categories: no seepage experiment and seepage experiment. Shear velocities are evaluated from the Reynolds shear stress distribution for both sets of experiments. Increase in the value of shear velocity is observed for the seepage experiment. Log-law of the velocity distribution in alluvial channel is modified over rough boundary with parabolic cross-sectional shape of the alluvial channel.The value of von-Karman{\textquoteright}s constant is decreased with the application of downward seepage. Increase in turbulent production and decrease in turbulent kinetic energy dissipation are observed in the presence of downward seepage. Further, Darcy-Weisbach friction factor is calculated and increase in the flow resistance is observed under the action of downward seepage.",

author = "P. Mahesh and V. Deshpande and B. Kumar",

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doi = "10.1201/b21902-82",

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Mahesh, P, Deshpande, V & Kumar, B 2016, Effect of seepage on the friction factor in an alluvial channel. in S Erpicum, B Dewals, P Archambeau & M Pirotton (eds), Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016. Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016, CRC Press/Balkema, pp. 473-477, 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016, Liege, Belgium, 27/07/16. https://doi.org/10.1201/b21902-82

Effect of seepage on the friction factor in an alluvial channel. / Mahesh, P.; Deshpande, V.; Kumar, B.
Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016. ed. / Sebastien Erpicum; Benjamin Dewals; Pierre Archambeau; Michel Pirotton. CRC Press/Balkema, 2016. p. 473-477 (Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016).

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

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AU - Kumar, B.

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N2 - In this study, an experimental approach is used to observe the effects of downward seepage on flow resistance in a threshold alluvial channel with parabolic cross sectional shape. Experiments are performed over fine and coarse sand bed channels in two categories: no seepage experiment and seepage experiment. Shear velocities are evaluated from the Reynolds shear stress distribution for both sets of experiments. Increase in the value of shear velocity is observed for the seepage experiment. Log-law of the velocity distribution in alluvial channel is modified over rough boundary with parabolic cross-sectional shape of the alluvial channel.The value of von-Karman’s constant is decreased with the application of downward seepage. Increase in turbulent production and decrease in turbulent kinetic energy dissipation are observed in the presence of downward seepage. Further, Darcy-Weisbach friction factor is calculated and increase in the flow resistance is observed under the action of downward seepage.

AB - In this study, an experimental approach is used to observe the effects of downward seepage on flow resistance in a threshold alluvial channel with parabolic cross sectional shape. Experiments are performed over fine and coarse sand bed channels in two categories: no seepage experiment and seepage experiment. Shear velocities are evaluated from the Reynolds shear stress distribution for both sets of experiments. Increase in the value of shear velocity is observed for the seepage experiment. Log-law of the velocity distribution in alluvial channel is modified over rough boundary with parabolic cross-sectional shape of the alluvial channel.The value of von-Karman’s constant is decreased with the application of downward seepage. Increase in turbulent production and decrease in turbulent kinetic energy dissipation are observed in the presence of downward seepage. Further, Darcy-Weisbach friction factor is calculated and increase in the flow resistance is observed under the action of downward seepage.

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T3 - Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016

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BT - Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016

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A2 - Pirotton, Michel

PB - CRC Press/Balkema

T2 - 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016

Y2 - 27 July 2016 through 29 July 2016

ER -

Mahesh P, Deshpande V, Kumar B. Effect of seepage on the friction factor in an alluvial channel. In Erpicum S, Dewals B, Archambeau P, Pirotton M, editors, Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016. CRC Press/Balkema. 2016. p. 473-477. (Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016). doi: 10.1201/b21902-82

Effect of seepage on the friction factor in an alluvial channel

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