A hydraulic jump occurs in an open channel when the slope of the channel changes from ___________.
A hydraulic jump occurs in an open channel when the slope of the channel changes from ___________.
Show Hint
- MILD slope to STEEP slope
- STEEP slope to MILD slope
- MILD slope to ZERO slope
- STEEP slope to a STEEPER slope
The Correct Option is B
Solution and Explanation
This change in slope causes the kinetic energy of the flow to be suddenly dissipated, forming a jump which is visible as a sudden rise in the water surface.
Hence, the correct answer is (B).
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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 Manning roughness coefficient value is 0.02. Acceleration due to gravity, \( g \), can be taken as 9.81 m/s\(^2\).
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