Author(s): Hyung-Jun Kim; Jung-Min Kim; Kwang Seok Yoon; Yong-Sik Cho
Linked Author(s): Hyung-Jun Kim, Yong-Sik Cho, Kwang Seok Yoon
Keywords: No Keywords
Abstract: Dam-break flows are affected by structures in floodplains. For instance the structural obstruction in an inundation area to the flows induces a back propagation effect that will increase water depth over a long distance upstream. In this study, the characteristics of dam-break flows in a flooding area having structures are investigated through laboratory measurements and numerical simulations. The variations of depths by dam-break flows are measured at 15 gauge points scattered in an inundation plain 24 m long and 28 m wide. In numerical simulation, the finite volume model is employed to generate dam-break flows. Experimental and numerical studies are performed in two different layouts of structures: (i) three square column structures evenly spaced in the flow approach direction and (ii) three square structures evenly spaced and rotated by an angle of 45° with regard to the flow approach direction.
Year: 2009