Correct Answer - Option 4 : Highly turbulent flow
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.
Mathematically, Reynolds Number is
\(Reynolds\ Number = \frac{inertial forces}{ viscous forces}\)
\({Re} = \frac{{\rho Vd}}{\mu }\)
Where, ρ = density, V = velocity, d = diameter, μ = viscosity
Reynolds number is important for decreasing the transport properties of a fluid or a particle moving in a fluid.
Flow-through pipes are classified into three main categories:
-
If Reynold number is very low (less than 2000) then flow is called Laminar flow.
- If Reynold number is in the range of 2000 to 4000 then flow is called transition flow.
- If Reynold number is very high (greater than 4000) then flow is called Turbulent flow.