# With reference to Fig. 1-1, show that the theoretical discharge of the channel flow may be expressed by 12 (1-12 1…

**Question:**

With reference to Fig. 1-1, show that the theoretical discharge of the channel flow may be expressed by 12 (1-12 1 where A, and As are the cross-sectional areas of the flow at sections 1 and 2, respec. tively, and Ay is the drop in water surface between the sections. 1-2. Verify Eq. (1-10). 1-3. Verify by computation the depth-velocity relationships shown in Fig. 1-5 for the four flow regimes in a wide rectangular open channel. The temperature of the water is taken as 68°F. 1-4. A model channel is used to simulate a prototype channel 100 ft wide, carrying a discharge of 500 efs at a depth of 4 ft. The model is designed for gravity effect and a turbulent-flow condition is assured. Determine the minimum size of the model and the scale ratio, assuming the upper limit of the transition al-flow region to be io is the ratio of the linear dimension of the model to that of the prototype REFERENCES 1. T. E. Stanton and J.R Panuu

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