Water at 15°C is flowing uniformly in a 2-m-wide rectangular channel at an average velocity of 1.5 m/s. If the water depth is 24 cm, determine whether the flow is subcritical or supercritical.

The tank shown drains through a triangular weir whose flowrate is described by the equation given. Determine the time it will take for the tank to drain from completely full (h = 5 ft) to 5.25 feet deep (h = 0.25 ft) assuming there is no flow into the tank. Volumetric Flowrate h=5 ft + 5 ft 3 ft³ S = 2.48 h².5 (for h in feet) 10 ft -20 ft- -20 ft-

Water at 15°C flows at a depth of 0.25 m with an average velocity of 7 m/s in a rectangular channel. Determine (a) the critical depth, (b) the alternate depth, and (c) the minimum specific energy.

In flowing from section (1) to section (2) along a rectangular open channel, the water depth decreases by a factor of three and the Froude number changes from a subcritical value of 0.7 to a supercritical value of 3.4. Determine the channel width at (2) if it is 8 ft. wide at section (1). Assume stead-state flow.

Water flowing in a wide horizontal channel approaches a 20-cm-high bump with a velocity of 1.25 m/s and a flow depth of 1.8 m. Determine the bumpheight for which the flow over the bump is critical (Fr = 1).

A triangular open-channel (n=0.014) has a side slope of 4H:5V. The flow depth is 1.5m when the slope is 0.002. Determine the volumetric flowrate.