Library Group - The River System For Unsteady Open Channel Flow Calculation

For the sake of stream routing, an unsteady nowcomputational mathematics modcl fOr the system of rcservoirgroup and channcl network was estabIishcd. The modeI was basedon the tbeory of St. Venant equations, and used fOur-point haplicitscheme to create the sct of diffcrence equations. Thosc equationswere solvcd by the three-stage method of resultants.Because tbe discbarge of uprivcr reservoirs is related witb thedownstream water level, it is nccessary to join the upriver storagerouting with thc river net's unstcadY now computation. otberfactors such as river branches, concentrated noWi sluice weirs, audso on wcre also takcn into account. Numerical modcling undcrdifferent processes of nood and tide was completed. The result wasok.