In these examples, an upstream large reservoir is considered, whose water level Hreservoir is 3 m constantly throughout the test. This is the upstream boundary condition. At the end of the last pool, there is a control structure with orifice offtake and a pump station. The flow through the orifice offtake depends on the upstream water level of the orifice, and the disturbance is introduced by the pump station. This is the downstream boundary condition. This example starts from an initial steady state (Tables 4 and 5), with a specific and constant demand delivery at the end of the pools (5 m3/s through the orifice offtake), and the disturbance is not introduced initially.

Table 4

Initial conditions in the canal

Control structureInitial flow rate (m3/s)Control structureInitial water level (m)
Gate 1 10.0 Checkpoint 1 2.0 
Gate 2 5.0 Checkpoint 2 2.0 
Control structureInitial flow rate (m3/s)Control structureInitial water level (m)
Gate 1 10.0 Checkpoint 1 2.0 
Gate 2 5.0 Checkpoint 2 2.0 
Table 5

Flow delivered by an orifice offtake at the initial time step

Control structureFlow delivered through an orifice offtake (m3/s)
Gravity outlet 1 5.0 
Gravity outlet 2 5.0 
Control structureFlow delivered through an orifice offtake (m3/s)
Gravity outlet 1 5.0 
Gravity outlet 2 5.0 

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