Author(s): Tae Beom Kim; Il Hwan Kim; Jae Beom Lee; Jeong-Seok Yang
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Keywords: No Keywords
Abstract: The salt wedge expansion in the upstream direction of rivers and estuaries is more frequently observed due to sea level rise. A little change of salinity has great influence on the ecological system and causes local economic damage because saline water acts as a pollutant. Therefore, this research proposes the installation of columns along the right and left sides of a river as a countermeasure of future sea level rise. It is expected that the installation of columns along the right and left sides of a river causes the flow velocity in the middle of the channel increase, while flow velocity within the column-installed area decreases. As a result, the positive effect of downstream increase of flow velocity on suppressing the upward expansion of salt wedge can be obtained. In order to verify and investigate the efficiency and possibility of this proposed technology, two dimensional flow analysis program reflecting the effect of drag force of columns is developed and applied to various conditions of columns.
Year: 2018