Evaluation of Stability for Ecological Revetment Method with Stone Mattress and Vegetation Mound Using ANSYS Fluent
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Currently, different types of revetment are installed in urban stream and various revetment methods are developed to improve the resistance to flow in order to reduce damage against flood. Especially, an eco-friendly revetment structure has a structural vulnerability against flood; however there are several theoretical and experimental technical issues to improve structural capacity. This research used computational program, ANSYS Fluent CFD, in order to evaluate the stability of ecological revetment, where stone mattress and vegetation mound are applied to protect in an extreme flood. In the result of numerical simulation, the velocity was decreased comparing to the central area of channel around the vegetation mound located at the bottom of stone mattress. The stable flow section at the downstream of stone mattress shows different according to the flow condition. If the vegetation mound is located at a section having minimum flow velocity, the erosion damage will be minimized.
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