9. A river discharges into the sea at an estuary that can be considered a linear channel. The tidal range is 0.8m and can be modelled with a simple sinosoidal profile of time period 12 hours. If the initial flow conditions have a low tide depth 0.4m and river velocity 0.3ms ¹, then neglecting bed slope and friction, using the method of characteristics: a. Calculate how far upstream the river will rise 3hours after low tide {18.1km} b. Find the velocity and water depth of the estuary 5km inland after 3 hours. {d= 0.73m, V = 1.1ms-¹} C. Use a spreadsheet to plot the depth and velocity for the whole estuary at t=3hours. At what location does the flow have no velocity? {14.5km}
9. A river discharges into the sea at an estuary that can be considered a linear channel. The tidal range is 0.8m and can be modelled with a simple sinosoidal profile of time period 12 hours. If the initial flow conditions have a low tide depth 0.4m and river velocity 0.3ms ¹, then neglecting bed slope and friction, using the method of characteristics: a. Calculate how far upstream the river will rise 3hours after low tide {18.1km} b. Find the velocity and water depth of the estuary 5km inland after 3 hours. {d= 0.73m, V = 1.1ms-¹} C. Use a spreadsheet to plot the depth and velocity for the whole estuary at t=3hours. At what location does the flow have no velocity? {14.5km}
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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