Question

In river and harbour models, the most suitable is____.

• A. Froude number
• B. Euler number
• C. Cauchy number
• D. Weber number

Answer 1

The correct option is A Froude number

Froude's law: This law is applicable when, in additional to inertial force, gravity forces are also important.

$\frac{V_r}{\sqrt{g_r{L}_r}}=1$

Froude's law is applicable in:

1. Free surface flow such as "River Flow", channel flow etc.

2. Motion of ship in rough and turbulent sea.

3. Flow over weir and notches.