Question

The Froude’s number for a flow in a channel section is 1. What type of flow is it?

(a) Sub Critical

(b) Critical

(c) Super critical

(d) Tranquil

The question was posed to me in examination.

This interesting question is from Types of Flow in Channels in section Flow in Open Channels of Fluid Mechanics

Answer 1

Correct choice is (b) Critical

For explanation: Froude’s number = 1 – Critical flow

Froude’s number < 1 – Sub Critical flow

Froude’s number > – Super Critical flow.