Measurement of Turbulent Flow Characteristics and Bed Shear Stress in Laboratory Soil Erosion Tests
The objective of this research project is to measure the characteristics of turbulent flow over an eroding soil sample in an erosion function apparatus (EFA) type facility. A gravel bed will be installed in an open-channel flume to produce fully developed turbulent flow over a rough bed. The turbulent flow will pass over a prepared soil sample housed in a floor recess. The velocity profile over the gravel bed and the soil sample will be measured using a Particle Image Velocimetry (PIV) system. PIV measurements will also be conducted with the soil sample replaced by a smooth bed to provide a baseline for comparison purpose. The measured data will be used to quantify the effects of surface roughness and depth of the soil erosion on the induced bed shear stress and soil erosion rates. The outcome of this experimental investigation will be an improved laboratory setup for measuring soil erodibility. A future extension of this project would use the improved EFA facility to develop a soil erodibility chart for South Dakota soils. This information should be useful for assessing the susceptibility of soil erosion and scour in highway projects.
Language
- English
Project
- Status: Active
- Funding: $151894
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Contract Numbers:
69A3551747108
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Sponsor Organizations:
Office of the Assistant Secretary for Research and Technology
University Transportation Centers Program
Department of Transportation
Washington, DC United States 20590 -
Managing Organizations:
North Dakota State University
Fargo, ND United States 58108 -
Project Managers:
Tolliver, Denver
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Performing Organizations:
Civil & Environmental Engineering
Brookings, SD United States -
Principal Investigators:
Ting, Francis
- Start Date: 20190411
- Expected Completion Date: 20240731
- Actual Completion Date: 0
- USDOT Program: University Transportation Centers Program
- Source Data: MPC-596
Subject/Index Terms
- TRT Terms: Bridges; Cohesive soils; Erosion; Laboratory tests; Roughness; Scour; Shear stress; Test facilities; Test procedures; Turbulence; Velocimeters
- Geographic Terms: South Dakota
- Subject Areas: Bridges and other structures; Geotechnology; Highways; Hydraulics and Hydrology;
Filing Info
- Accession Number: 01701892
- Record Type: Research project
- Source Agency: Mountain-Plains Consortium
- Contract Numbers: 69A3551747108
- Files: UTC, RIP
- Created Date: Apr 17 2019 4:44PM