Open Channel Flow (CE)

A 5.0 m wide rectangular channel carries a discharge of $10 \mathrm{~m}^3 / \mathrm{s}$ at a depth of 1.5 m under uniform flow. To produce critical flow conditions without affecting the upstream conditions, the channel b...

A hydraulic jump occurs in an open channel when the slope of the channel changes from__________ .

Consider flow in a long and very wide rectangular open channel. Width of the channel can be considered as infinity compared to the depth of flow. Uniform flow depth is 1.0 m . The bed slope of the channel is 0.0001 . The...

A hydraulic jump is formed in a 5 m wide rectangular channel, which has a horizontal bed and is carrying a discharge of $15 \mathrm{~m}^3 / \mathrm{s}$. The depth of water upstream of the jump is 0.5 m . The power dissip...

For a flowing fluid, a dimensionless combination of velocity (V), length scale (l), and acceleration due to gravity (g) would be

A spillway has unit discharge of 7.5 m 3 /s/m. The flow depth at the downstream horizontal apron is 0.5 m. The tail water depth (in meters) required to form a hydraulic jump is ___________ (rounded off to 2 decimal place...

The number of degrees of freedom for a natural open channel flow with a mobile bed is

A rectangular channel is 4.0 m wide and carries a discharge of 2.0 m 3 /s with a depth of 0.4 m. The channel transitions to a maximum width contraction at a downstream location, without influencing the upstream flow cond...

A 2 m wide rectangular channel is carrying a discharge of 30 m 3 /s at a bed slope of 1 in 300. Assuming the energy correction factor as 1.1 and acceleration due to gravity as 10 m/s 2 , the critical depth of flow (in me...

A round-bottom triangular lined canal is to be laid at a slope of 1 in 1500, to carry a discharge of 25 m 3 /s. The side slopes of the canal cross-section are to be kept at 1.25H : 1V. If Manning’s roughness coefficient...

When a supercritical stream enters a mild-sloped (M) channel section, the type of flow profile would become _________.

A hydraulic jump occurs in a 1.0 m wide horizontal, frictionless, rectangular channel, with a pre-jump depth of 0.2 m and a post-jump depth of 1.0 m. The value of g may be taken as 10 m/s 2 . The values of the specific f...

The critical flow condition in a channel is given by _______. [Note: 𝛼 – kinetic energy correction factor; 𝑄 – discharge; A c – cross-sectional area of flow at critical flow condition; T c – top width of flow at critic...

Depth of water flowing in a 3 m wide rectangular channel is 2 m. The channel carries a discharge of 12 m 3 /s. Take g = 9.8 m/s 2 . The bed width (in m) at contraction, which just causes the critical flow, is _________ w...

Water is flowing in a horizontal, frictionless, rectangular channel. A smooth hump is built on the channel floor at a section and its height is gradually increased to reach choked condition in the channel. The depth of w...

A rectangular channel with Gradually Varied Flow (GVF) has a changing bed slope. If the change is from a steeper slope to a steep slope, the resulting GVF profile is