Abstract
The effects of the Froude numbers on turbulent flow patterns downstream of a non-submerged spur dike were investigated in a laboratory flume. Three-dimensional velocities and water depths were measured using Acoustic Doppler Velocimetry and distance sensors under three Froude number conditions (Frd = 0.31, 0.38, and 0.46). The results show that there are marginal differences in the velocity fields downstream of a spur dike due to the change of the Froude number. However, an increase of the Froude number was found to reduce cross-sectional area in the flow and to increase the strength of the jet-like flow. The jet-like flow was observed to displace the location of the maximum turbulence kinetic energy within a cross section toward the inner bank in the transverse direction.
Original language | English |
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Pages (from-to) | 115-123 |
Number of pages | 9 |
Journal | Journal of Korea Water Resources Association |
Volume | 52 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2019 |
Externally published | Yes |
Keywords
- ADV
- Open channel
- Recirculation flow
- Spur dike
- Three-dimensional flow