If Reynolds number is more than 2000, then the flow is called

Explanation:

Reynolds Number:

• It is the ratio of the inertial forces to viscous forces.

• It is a dimensionless number used to categorize the fluid systems in the effect of viscosity is important in controlling the velocities or the flow pattern of a fluid.
• Reynolds Number = (inertial forces) / (viscous forces)

Mathematically, Reynolds Number is

Where,  ρ = density, V = velocity, d = diameter, μ = viscosity

For open channel flow -

1. Laminar flow: Reynolds no. < 500
2. Turbulent flow: Reynolds no. > 2000

Additional InformationFlow-through pipes are classified into three main categories:

1. Laminar flow: Reynolds no. < 2000
2. Transitional flow: 2000 < Reynolds no. < 4000
3. Turbulent flow: Reynolds no. > 4000

Note:

• Reynolds no. less than 2000 (Laminar flow) is also known as viscous flow.
• With a strong predominance of inertial forces over viscous forces, the largest scales of fluid motion are underdamped i.e. there is not enough viscosity to dissipate their motions.

Confusion PointsIt is official question of JKSSB JE, and question language is not clear that it is open channel flow question or flow through pipe question. Answer is given considering open channel flow.