Civil Engineering MCQAE Level Civil Engineering
In open channel flow, spatially varied flow (SVF) has a discharge that varies along the channel length. The governing equation for SVF with lateral inflow is:
Fluid MechanicsSteady Non-uniform FlowMEDIUM
Choose the correct answer
A
dy/dx = (S0 - Sf) / (1 - Fr^2)
B
dy/dx = (S0 - Sf - q_L x V / gA) / (1 - Fr^2)
C
V = (1/n)R^(2/3)S^(1/2)
D
Q = constant
Correct Answer
B. dy/dx = (S0 - Sf - q_L x V / gA) / (1 - Fr^2)
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Spatially varied flow equation: dy/dx = (S0 - Sf - q_L V / gA) / (1 - Fr^2), where q_L = lateral inflow per unit length. SVF occurs in side-spillways, collecting channels, drop inlets.
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