Civil Engineering MCQAE Level Civil Engineering
For hydraulic model testing where gravity is the dominant force (e.g. open channel flow, dam spillways), the model is designed using:
Fluid MechanicsSimilarity LawsMEDIUM
Choose the correct answer
A
Reynolds similarity
B
Froude similarity
C
Weber similarity
D
Mach similarity
Correct Answer
B. Froude similarity
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When gravity dominates (Froude number Fr is the controlling parameter): model and prototype must have equal Fr. This gives scale relations: V_r = L_r^(1/2), Q_r = L_r^(5/2), t_r = L_r^(1/2).
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