A rectangular channel has a width of 5 m, carriers a discharge of 25.2 m/s with a depth of 3.6 m at section 1. At a certain distance downstream (section 2), flow experiences a smooth and gradual contraction with a minimum width of B to form a critical condition. Note: The energy loss is 100% of the velocity head at section 1. b) Calculate the Froude number in section 1 c) Calculate the minimum channel width (B) at section 2 such that no backwater occurs for this discharge 1) Calculate the force imbalance using the momentum equation bo F- Top verw Bin Q 3₁ Side verw

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A rectangular channel has a width of 5 m, carriers a discharge of 25.2 m/s with a depth of 3.6 m at
section 1. At a certain distance downstream (section 2), flow experiences a smooth and gradual
contraction with a minimum width of B to form a critical condition.
Note: The energy loss is 100% of the velocity head at section 1.
b) Calculate the Froude number in section 1
c) Calculate the minimum channel width (B) at section 2 such that no backwater occurs for this
discharge
d) Calculate the force imbalance using the momentum equation
Q
F
F
Top veiw
Bin
31
Side vetw
Transcribed Image Text:A rectangular channel has a width of 5 m, carriers a discharge of 25.2 m/s with a depth of 3.6 m at section 1. At a certain distance downstream (section 2), flow experiences a smooth and gradual contraction with a minimum width of B to form a critical condition. Note: The energy loss is 100% of the velocity head at section 1. b) Calculate the Froude number in section 1 c) Calculate the minimum channel width (B) at section 2 such that no backwater occurs for this discharge d) Calculate the force imbalance using the momentum equation Q F F Top veiw Bin 31 Side vetw
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