FLOW CHARACTERIZATION IN SLUICE GATE DUE TO THE INFLUENCE OF PLASTIC DEBRIS

• Main Author: Nurfajrin, Kathlien
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/75006
• Institution: Institut Teknologi Bandung

One of the properties of plastic is its high durability, but this advantage leads to the accumulation of plastic debris at water gates in drainage systems, resulting in an increase in water level upstream and an increased risk of flooding in the channels. This study is a hydraulic modeling experiment using a glass-sided tilted flume to investigate the flow characteristics resulting from the influence of plastic debris accumulation on the water structure. The obtained data includes the flow velocity upstream and downstream, the initial and post-jump depths, as well as the thickness and length of the debris carpet. From this data, graphs were generated to illustrate the relationship between the gate coefficient, water discharge, gate opening height, and the amount of modeled plastic debris. Observation results show that with the addition of plastic debris into the channel, in four debris conditions (without debris, 100 pcs debris, 200 pcs debris, and 500 pcs debris), there were a disruptive nature of plastic debris on the open channel flow. It may cause irregular fluctuations in water levels and affect the overall hydraulic behavior of the channel. Especially, the flow phenomenon in the scenario was not yet fully stable, and jumps were observed at the end of the channel. Further studies are needed to observe and analyze this phenomenon using a longer flume for more comprehensive insights.