all your necessary a 5. (20p) (PC 2) The flow rate of water in an open-top...

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all your necessary a 5. (20p) (PC 2) The flow rate of water in an open-top channel can be estimated by placing a semi-circular obstacle on the bottom and measuring the depression height d, as shown in the figure. Derive an expression as U-f(d, R, H), make sure that you list all of the assumtions you made. HINT: Every solid surface is considered as a streamline in an invisicid flow. U H R d all your necessary a 5. (20p) (PC 2) The flow rate of water in an open-top channel can be estimated by placing a semi-circular obstacle on the bottom and measuring the depression height d, as shown in the figure. Derive an expression as U-f(d, R, H), make sure that you list all of the assumtions you made. HINT: Every solid surface is considered as a streamline in an invisicid flow. U H R d