Engineering Board Exam Reviewer · Fluid Mechanics · hard

A 1:25 scale model of a spillway is built using Froude similarity. If the model discharge is 0.02 m3/s, what is the corresponding prototype discharge?

  1. 12.5 m3/s
  2. 2.5 m3/s
  3. 62.5 m3/s
  4. 312.5 m3/s

Answer

C. 62.5 m3/s

Solution

Qr = Lr5/2 = 252.5 = 3125. Qp = 0.02(3125) = 62.5 m3/s.

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