| Popis: |
Spur dikes have been used as hydraulic structures to suppress bank erosion by flood flow, waves generated by ship and to maintain flow depth as a navigation channel. Recently, it’s noticed that they have functions to produce diversified attractive environments in river. In this study, experiments were executed to clarify water and momentum exchange between main flow and non-submerged spur-dikes regions. The results showed that prominent water surface oscillations happened in an arrangement of spur -dikes and the variations obviously correlated with velocity fluctuations, enhanced the water exchange, but did not influence on Reynolds shear stress. |
