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A laboratory model of a river is built to a geometric scale of 1 : 00. The fluid used in the model is oil of mass density 900 kg/m3. The heighest flood in the river is 10,000 m3 / s. The corresponding discharge in the model shall be
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- 0.95 m3 /s
- 0.100 m3 / s
- 0.105 m3 / s
- 10.5 m3 / s
Correct Option: B
Apply Froude’s law.
Density of fluid does not affect model study.
| Qr = | = Lr5 / 2 | |
| Qp |
Qp = 10000 m3 / s
| Lr = | ||
| 100 |
| ⇒ Qm = 10000 × |  |  | 5 / 2 | |
| 100 |
| = 10000 × | | | 5 = 0.1 m3 / s | |
| 10 |
