He phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid surface, is
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Hydraulic jump—M. Fig. shows a hydraulic jump, which sometimes occurs in open channel or river flow. Under the proper conditions, a rapidly flowing stream of liquid suddenly changes to a slowly flowing or tranquil stream with an attendant rise in the elevation of the liquid surface.
Fig. Hydraulic jump.
By using mass and momentum balances on control volumes that extend unit distance normal to the plane of the figure, neglecting friction at the bottom of the channel, and assuming the velocity profiles to be flat, prove that the downstream depth d2 is given by:
If u1 = 5 m/s and d1 = 0.2 m,
Fig. Hydraulic jump.
By using mass and momentum balances on control volumes that extend unit distance normal to the plane of the figure, neglecting friction at the bottom of the channel, and assuming the velocity profiles to be flat, prove that the downstream depth d2 is given by:
If u1 = 5 m/s and d1 = 0.2 m,
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