题目
题目

CVEN90051_2025_SM2 Exam: Civil Hydraulics (CVEN90051_2025_SM2)- Requires Respondus LockDown Browser

单项选择题

M1Q6 Which factors control the length of a hydraulic jump?

选项
A.Flow conditions downstream of the jump
B.The height of the jump
C.Flow conditions upstream of the jump
D.Flow conditions both upstream and downstream of the jump
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标准答案
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思路分析
To start, let's lay out the problem: we are asked which factors control the length of a hydraulic jump. Option 1: Flow conditions downstream of the jump. This is not the primary driver for the jump length; while downstream conditions are influenced by the jump, the length itself is governed mainly by ......Login to view full explanation

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M1Q9 PART #3 (Numerical Answer) The jet emerging from an underflow vertical sluice gate contracts at the "vena contracta" just downstream of the gate, where the depth is 0.7 m. Downstream of the gate, where the flow is unaffected, water depth coincides with the normal depth dn = 3.2 m. The channel has got a rectangular cross section 8 m wide, n = 0.03 and slope S0 = 0.002. PART #3 (numerical calculation): Relative to the vena contracta, at what distance will the hydraulic jump start? (Use a single calculation step only). (Answer in m). 

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M1Q10 PART #1 (Numerical Answer) Water discharging from a spillway into a rectangular horizontal (wide) channel goes through a hydraulic jump, before returning to a river (see schematic below). PART #1 (numerical calculation): If the conjugate depth after the jump is d2 = 2.1 m and the corresponding velocity is V2 = 1.79 m/s, what is the height of the step Δ z0 that would allow a uniform transition to the river where flow depth is d3 = 1.5 m and velocity is V3 = 2.5 m/s. (Answer in m). 

M1Q10 PART #2 (METHOD) Water discharging from a spillway into a rectangular horizontal (wide) channel goes through a hydraulic jump, before returning to a river (see schematic below). PART #2 (method): Which method could be used to determine the height of this step?

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