Question

The streamlines of the particles in a flow are recorded. If the streamline distribution remain the same even after sometime, what type of flow can it be?

(a) steady

(b) unsteady

(c) uniform

(d) non-uniform

I had been asked this question in quiz.

My question is from Types of Flow Lines topic in chapter Kinematics of Flow and Ideal Flow of Fluid Mechanics

Answer 1

Right answer is (a) steady

To explain: A streamline is defined as an imaginary line within the flow such that the tangent at any point on it indicates the velocity at that point. In a steady flow, the velocity of the particles is constant with time. Hence, the streamlines remain the same even after sometime.