Turbulent open-channel flow with upward seepage
Date of Issue1998
School of Civil and Environmental Engineering
Measurements of turbulent open-channel flow subjected to an upward bed seepage were performed in a laboratory flume using a two-dimensional Acoustic Doppler Velocimeter and a minipropeller. The experimental results show that the boundary seepage affects the time-mean streamwise velocity, the rms values of the velocity fluctuations, the Reynolds shear stress and the bed shear stress in open-channel flow. Along the seepage zone, the mean streamwise velocity increases much more in the surface layer than that in the near-bed region, whereas the turbulent intensities and Reynolds shear stress increase significantly in the near-bed region. The bed shear stress that was computed using the momentum integral equation shows a steady reduction with increasing upward seepage velocity.
DRNTU::Engineering::Civil engineering::Water resources
Journal of hydraulic research
© 1998 IAHR. This is the author created version of a work that has been peer reviewed and accepted for publication in Journal of Hydraulic Research, published by Taylor & Francis on behalf of International Association for Hydro-Environment Engineering and Research. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1080/00221689809498627].