GATE CE 2015 Set 1 — Question 54
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Water Resources Engineering → Hydraulic Jump & Varied Flow → Hydraulic Jump
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Question
A hydraulic jump is formed in a wide rectangular channel which is horizontal and frictionless. The post-jump depth and velocity are and , respectively. The pre-jump velocity is ________________ . (use )
Correct answer
4.75 to 4.85
Solution
Given post-jump conditions: .
Discharge per unit width .
Froude number at post-jump section:
Using the conjugate depth relationship:
Pre-jump velocity:
Discharge per unit width .
Froude number at post-jump section:
Using the conjugate depth relationship:
Pre-jump velocity:
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