Direct measurement of bottom shear stress under high-velocity flow conditions

Jae Hyeon Park; Young Do Kim; Yong Sung Park; Jae An Jo; Kimchhun Kang

doi:10.1016/j.flowmeasinst.2015.12.008

Direct measurement of bottom shear stress under high-velocity flow conditions

Jae Hyeon Park, Young Do Kim (Lead / Corresponding author), Yong Sung Park, Jae An Jo, Kimchhun Kang

Civil Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The objectives of the present research are to accurately measure bottom shear stress under high-velocity flow conditions. To achieve high-velocity flow conditions, a laboratory-scale flume has been specially built in which flow velocity can reach over 3 m s⁻ ¹. Also an instrument that can directly measure bottom shear stress has been developed and validated. Then, the flow resistance has been estimated by simultaneously measuring flow velocity and bottom shear stress. It appears that the shear stress is indeed proportional to velocity squared and also to Reynolds number. On the other hand, Manning's n value and the skin friction factor are more or less uniform across all experimental cases.

Original language	English
Pages (from-to)	121-127
Number of pages	7
Journal	Flow Measurement and Instrumentation
Volume	50
Early online date	30 Dec 2015
DOIs	https://doi.org/10.1016/j.flowmeasinst.2015.12.008
Publication status	Published - Aug 2016

Keywords

Direct bottom shear stress measurement
Flow resistance
High-velocity flow

ASJC Scopus subject areas

Instrumentation
Modelling and Simulation
Computer Science Applications
Electrical and Electronic Engineering

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10.1016/j.flowmeasinst.2015.12.008

Cite this

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title = "Direct measurement of bottom shear stress under high-velocity flow conditions",

abstract = "The objectives of the present research are to accurately measure bottom shear stress under high-velocity flow conditions. To achieve high-velocity flow conditions, a laboratory-scale flume has been specially built in which flow velocity can reach over 3 m s− 1. Also an instrument that can directly measure bottom shear stress has been developed and validated. Then, the flow resistance has been estimated by simultaneously measuring flow velocity and bottom shear stress. It appears that the shear stress is indeed proportional to velocity squared and also to Reynolds number. On the other hand, Manning's n value and the skin friction factor are more or less uniform across all experimental cases.",

keywords = "Direct bottom shear stress measurement, Flow resistance, High-velocity flow",

author = "Park, {Jae Hyeon} and {Do Kim}, Young and Park, {Yong Sung} and Jo, {Jae An} and Kimchhun Kang",

note = "This research was supported by a grant (12-TI-C02) from Construction Technology Innovation Program funded by Ministry of Land, Infrastructure and Transport of Korean government (MLIT, KAIA). YSP also acknowledges the financial support from the Royal Society of Edinburgh/Scottish Government Personal Research Fellowship Co-Funded by the Marie-Curie Actions.",

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doi = "10.1016/j.flowmeasinst.2015.12.008",

language = "English",

volume = "50",

pages = "121--127",

journal = "Flow Measurement and Instrumentation",

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T1 - Direct measurement of bottom shear stress under high-velocity flow conditions

AU - Park, Jae Hyeon

AU - Do Kim, Young

AU - Park, Yong Sung

AU - Jo, Jae An

AU - Kang, Kimchhun

N1 - This research was supported by a grant (12-TI-C02) from Construction Technology Innovation Program funded by Ministry of Land, Infrastructure and Transport of Korean government (MLIT, KAIA). YSP also acknowledges the financial support from the Royal Society of Edinburgh/Scottish Government Personal Research Fellowship Co-Funded by the Marie-Curie Actions.

PY - 2016/8

Y1 - 2016/8

N2 - The objectives of the present research are to accurately measure bottom shear stress under high-velocity flow conditions. To achieve high-velocity flow conditions, a laboratory-scale flume has been specially built in which flow velocity can reach over 3 m s− 1. Also an instrument that can directly measure bottom shear stress has been developed and validated. Then, the flow resistance has been estimated by simultaneously measuring flow velocity and bottom shear stress. It appears that the shear stress is indeed proportional to velocity squared and also to Reynolds number. On the other hand, Manning's n value and the skin friction factor are more or less uniform across all experimental cases.

AB - The objectives of the present research are to accurately measure bottom shear stress under high-velocity flow conditions. To achieve high-velocity flow conditions, a laboratory-scale flume has been specially built in which flow velocity can reach over 3 m s− 1. Also an instrument that can directly measure bottom shear stress has been developed and validated. Then, the flow resistance has been estimated by simultaneously measuring flow velocity and bottom shear stress. It appears that the shear stress is indeed proportional to velocity squared and also to Reynolds number. On the other hand, Manning's n value and the skin friction factor are more or less uniform across all experimental cases.

KW - Direct bottom shear stress measurement

KW - Flow resistance

KW - High-velocity flow

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DO - 10.1016/j.flowmeasinst.2015.12.008

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JO - Flow Measurement and Instrumentation

JF - Flow Measurement and Instrumentation

ER -

Direct measurement of bottom shear stress under high-velocity flow conditions

Abstract

Keywords

ASJC Scopus subject areas

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