Author(s): D. L. Young; Q. H. Lin
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Keywords: No Keywords
Abstract: A laterally average 2D mathematical model in a vertical plane is used to simulate the density currents of the Te-Chi reservoir of Taiwan caused by both the thermal stratification and suspended sediment concentration. The Galerkin finite element method with the option of moving adaptive grid system is employed to cope with the on-time variations of reservoir storage (including free surface). Numerical simulation reveals that the motions of density currents are affected not only by the inflow discharges and their associated inflow temperatures and sediment, concentrations, but also the ambient temperature distributions of the reservoir as well as the operation of selective withdrawal. In particular, peak flow induced density currents are very predominent during the event of a storm rainfall, although a long-term simulation of 1984 annual episode was performed in this study.
Year: 1991