Experiment study of bed load particle velocity

Jaeho Shim, Guohong Duan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Bed load transport rate can be calculated by using the particle velocity of transport sediment. However, few experiments have been conducted to directly measure bed sediment velocity. This paper presented a series of experiments conducted at an open channel flume to study bed load particle velocity at different stages of transport intensity. The flume is 13.5 m long and 0.6 m wide with a fixed bottom slope of 0.001. Four groups of uniformly sized sediments with mean sizes ranging from 0.45 mm to 4.75 mm are used. Flow discharge is measured at the end of flume using a rectangular weir ranging from 0.015 to 0.055 m3/s. The vertical distribution of flow velocity is measured using the Vectrino Velocity Profiler with a sampling frequency of 70 Hz. Bed load particle velocities are determined by particle tracking analysis of a series of images captured using a high-speed camera. The spatial and temporal averaged particle velocities and the statistical distribution of velocities are calculated and compared with empirical relations. Results showed that the spatial averaged particle velocity is much smaller than the saltation velocity of a single particle. A new linear relation for particle velocity is formulated based on the experimental data. Additionally, both measured particle velocities and transport directions nearly satisfy the normal distribution. Those experimental data for particle velocity provide opportunity to improve prediction of sediment transport.

Original languageEnglish (US)
Title of host publicationWorld Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress
Pages1962-1970
Number of pages9
StatePublished - 2013
EventWorld Environmental and Water Resources Congress 2013: Showcasing the Future - Cincinnati, OH, United States
Duration: May 19 2013May 23 2013

Other

OtherWorld Environmental and Water Resources Congress 2013: Showcasing the Future
CountryUnited States
CityCincinnati, OH
Period5/19/135/23/13

Fingerprint

bedload
experiment
sediment transport
particle
saltation
weir
statistical distribution
profiler
flow velocity
sediment
vertical distribution

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Shim, J., & Duan, G. (2013). Experiment study of bed load particle velocity. In World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress (pp. 1962-1970)

Experiment study of bed load particle velocity. / Shim, Jaeho; Duan, Guohong.

World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress. 2013. p. 1962-1970.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shim, J & Duan, G 2013, Experiment study of bed load particle velocity. in World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress. pp. 1962-1970, World Environmental and Water Resources Congress 2013: Showcasing the Future, Cincinnati, OH, United States, 5/19/13.
Shim J, Duan G. Experiment study of bed load particle velocity. In World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress. 2013. p. 1962-1970
Shim, Jaeho ; Duan, Guohong. / Experiment study of bed load particle velocity. World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress. 2013. pp. 1962-1970
@inproceedings{6213c649953a4ea69db218a1b07cde73,
title = "Experiment study of bed load particle velocity",
abstract = "Bed load transport rate can be calculated by using the particle velocity of transport sediment. However, few experiments have been conducted to directly measure bed sediment velocity. This paper presented a series of experiments conducted at an open channel flume to study bed load particle velocity at different stages of transport intensity. The flume is 13.5 m long and 0.6 m wide with a fixed bottom slope of 0.001. Four groups of uniformly sized sediments with mean sizes ranging from 0.45 mm to 4.75 mm are used. Flow discharge is measured at the end of flume using a rectangular weir ranging from 0.015 to 0.055 m3/s. The vertical distribution of flow velocity is measured using the Vectrino Velocity Profiler with a sampling frequency of 70 Hz. Bed load particle velocities are determined by particle tracking analysis of a series of images captured using a high-speed camera. The spatial and temporal averaged particle velocities and the statistical distribution of velocities are calculated and compared with empirical relations. Results showed that the spatial averaged particle velocity is much smaller than the saltation velocity of a single particle. A new linear relation for particle velocity is formulated based on the experimental data. Additionally, both measured particle velocities and transport directions nearly satisfy the normal distribution. Those experimental data for particle velocity provide opportunity to improve prediction of sediment transport.",
author = "Jaeho Shim and Guohong Duan",
year = "2013",
language = "English (US)",
isbn = "9780784412947",
pages = "1962--1970",
booktitle = "World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress",

}

TY - GEN

T1 - Experiment study of bed load particle velocity

AU - Shim, Jaeho

AU - Duan, Guohong

PY - 2013

Y1 - 2013

N2 - Bed load transport rate can be calculated by using the particle velocity of transport sediment. However, few experiments have been conducted to directly measure bed sediment velocity. This paper presented a series of experiments conducted at an open channel flume to study bed load particle velocity at different stages of transport intensity. The flume is 13.5 m long and 0.6 m wide with a fixed bottom slope of 0.001. Four groups of uniformly sized sediments with mean sizes ranging from 0.45 mm to 4.75 mm are used. Flow discharge is measured at the end of flume using a rectangular weir ranging from 0.015 to 0.055 m3/s. The vertical distribution of flow velocity is measured using the Vectrino Velocity Profiler with a sampling frequency of 70 Hz. Bed load particle velocities are determined by particle tracking analysis of a series of images captured using a high-speed camera. The spatial and temporal averaged particle velocities and the statistical distribution of velocities are calculated and compared with empirical relations. Results showed that the spatial averaged particle velocity is much smaller than the saltation velocity of a single particle. A new linear relation for particle velocity is formulated based on the experimental data. Additionally, both measured particle velocities and transport directions nearly satisfy the normal distribution. Those experimental data for particle velocity provide opportunity to improve prediction of sediment transport.

AB - Bed load transport rate can be calculated by using the particle velocity of transport sediment. However, few experiments have been conducted to directly measure bed sediment velocity. This paper presented a series of experiments conducted at an open channel flume to study bed load particle velocity at different stages of transport intensity. The flume is 13.5 m long and 0.6 m wide with a fixed bottom slope of 0.001. Four groups of uniformly sized sediments with mean sizes ranging from 0.45 mm to 4.75 mm are used. Flow discharge is measured at the end of flume using a rectangular weir ranging from 0.015 to 0.055 m3/s. The vertical distribution of flow velocity is measured using the Vectrino Velocity Profiler with a sampling frequency of 70 Hz. Bed load particle velocities are determined by particle tracking analysis of a series of images captured using a high-speed camera. The spatial and temporal averaged particle velocities and the statistical distribution of velocities are calculated and compared with empirical relations. Results showed that the spatial averaged particle velocity is much smaller than the saltation velocity of a single particle. A new linear relation for particle velocity is formulated based on the experimental data. Additionally, both measured particle velocities and transport directions nearly satisfy the normal distribution. Those experimental data for particle velocity provide opportunity to improve prediction of sediment transport.

UR - http://www.scopus.com/inward/record.url?scp=84887480676&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887480676&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9780784412947

SP - 1962

EP - 1970

BT - World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress

ER -