Velocity distribution in a channel for erosion research in cohesive soils

Haoyin Shan, Andreas Wagner, Kornel Kerenyi, Junke Guo

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

1 Scopus citations

Abstract

Mimicking an open channel flow in a well-controlled physical model, the ex-situ scour testing device (ESTD), to study the erosion of cohesive soils is crucial to reproduce the hydrodynamic forces expected in the field. The well-controlled system enables the measurement of hydrodynamic forces acting on cohesive soil samples using a special designed sensor. Samples are mounted on the sensor that can measure shear and normal forces eroding samples. A 58 cm long, 12 cm wide and 2 cm deep channel was designed, in which the flow was propelled by a rolling belt on top of the channel and supported by a pump. Using particle image velocimetry (PIV), it was found that the belt itself produced an S-shape velocity profile. Higher belt speeds generated more curved velocity profiles. The top part of the profile had a higher velocity gradient compared to the lower part. When the belt interacts with the pump, the velocity profile gets close to that of an open channel flow.

Original languageEnglish (US)
Title of host publication34th IAHR Congress 2011 - Balance and Uncertainty
Subtitle of host publicationWater in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering
PublisherInternational Association for Hydro-Environment Engineering and Research (IAHR)
Pages3777-3784
Number of pages8
ISBN (Electronic)9780858258686
Publication statusPublished - Jan 1 2011
Event34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering - Brisbane, Australia
Duration: Jun 26 2011Jul 1 2011

Publication series

Name34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering

Conference

Conference34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering
CountryAustralia
CityBrisbane
Period6/26/117/1/11

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Keywords

  • Cohesive soils
  • Erosion
  • Ex-situ scour testing device
  • PIV
  • Sensor

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Water Science and Technology
  • Environmental Science (miscellaneous)

Cite this

Shan, H., Wagner, A., Kerenyi, K., & Guo, J. (2011). Velocity distribution in a channel for erosion research in cohesive soils. In 34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering (pp. 3777-3784). (34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water Engineering). International Association for Hydro-Environment Engineering and Research (IAHR).