Skip to main content
Contribution to Book
Local Boundary Shear Stress Estimates from Velocity Profiles Measured with an ADCP
Proceedings of the International Fluvial Hydraulics River Flow (2010)
  • John Petrie, Washington State University
  • Soonkie Nam, Georgia Southern University
  • Marte S. Gutierrez, Colorado School of Mines
  • Panayiotis Diplas, Lehigh University
Abstract
The acoustic Doppler current profiler (ADCP) has become an important tool in the study of river processes. When measurements are obtained at a fixed location within the river channel, time-averaged velocity profiles can be calculated. These profiles have the potential to quantify flow properties such as secondary currents and boundary shear stress. Velocity profiles from ADCP measurements obtained on the lower Roanoke River in the USA are used to estimate local mean boundary shear stress. The procedure combines the well known log-law with visually establishing the region within the flow depth where this law is valid. Additionally, methods are presented to (i) determine if movement of the ADCP adversely affects the measured velocity profile, (ii) test whether the recorded data is stationary, and (iii) calculate the depth-averaged velocity.
Keywords
  • Local boundary,
  • Shear stress,
  • Velocity profiles,
  • Velocity,
  • ADCP
Publication Date
September 8, 2010
Editor
Andreas Dittrich, Katinka Koll, Jochen Aberle, and Peter Geisenhainer
Publisher
Bundesanstalt für Wasserbau
ISBN
9783939230007
Citation Information
John Petrie, Soonkie Nam, Marte S. Gutierrez and Panayiotis Diplas. "Local Boundary Shear Stress Estimates from Velocity Profiles Measured with an ADCP" Braunschweig, GermanyProceedings of the International Fluvial Hydraulics River Flow Vol. 1 (2010) p. 1749 - 1755
Available at: http://works.bepress.com/soonkie-nam/15/