Author(s): Muhammad Mujahid Muhammad, Khamaruzaman Wan Yusof, Muhammad Raza Ul Mustafa, Nor Azazi Zakaria, Aminuddin Ab. Ghani
Linked Author(s): Mujahid Muhammad Muhammad
Keywords: Flow resistance, ecological swales, subsurface drainage, hydraulic performance, flow attenuation
Abstract: This paper studies flow resistance through subsurface drainage modules, which can convey runoff and allow natural infiltration in waterways such as ecological swales. In this regard, experiments were performed using a new design of three (3) number single subsurface drainage modules arranged in parallel within a rectangular channel. The hydraulic performance of the subsurface module was determined in terms of the flow resistance and discharges of the upstream and downstream of the modules respectively. It was found that the upstream discharge was lowered in the range of 30. 03% to 37. 49%. This indicates the occurrence of flow attenuation especially when the bed slope was 1 in 500. Hence, the newly designed subsurface drainage module can be used in managing of stormwater runoff
Year: 2017