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SSC JE Civil Engineering 2014 Set 2 Paper

Question : 165 of 200

Marks: +1, -0

For subcritical flow, the froude number is :

Solution:

Froude number

F_r = \sqrt{\frac{F_i}{F_g}} = \frac{V}{\sqrt{gD}}

Where V = mean velocity of flow

D = hydraulic depth

● If

F_r < 1

, Flow is sub critical or streaming or tranquil. It is a stable type of flow.

● If

F_r = 1

, Flow is critical.

● If

F_r > 1

, Flow is super critical or shooting flow or Torrential flow.

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