Abstract
AbstractThis study selected a typical waterfront lake, the Inner Lake, as the research area. Based on field measurements and laboratory experiments, the basic properties of sediment particles were analyzed, including size, bulk and dry bulk density, and hydrostatic and hydrodynamic settling velocity. With the finite-volume method, the flux vector splitting (FVS) scheme was employed to establish a two-dimensional unsteady flow and sediment mathematical model. The underwater terrain shaping processes in the short term (2017), middle term (2020), and long term (2025) were predicted. The results showed that sediment deposition thickness will significantly increase in the Inner Lake, reaching 13.5 cm in the short term (January 2017), 28.6 cm in the middle term (January 2020), and 55.2 cm in the long term (January 2025). Owing to the strong hydrodynamic condition of the Leading Channel, sediment deposition there is the lowest, with the lake bed elevating rate at 3.92 cm·a−1 on average. The elevating rate at th...
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