Question

A value of Reynold's number _________ indicates turbulence.

Answer 1

Explanation,

1. A dimensionless quantity, Reynolds number which is used to determine the laminar or turbulent type of flow pattern while flowing through a pipe.
2. Reynolds number is the ratio of inertial forces to that viscous forces.
3. $R_e=\frac{\rho VD}{\mu }$$R_e$ is the Reynolds number, $\rho$ is the density of the fluid,$V$ is the velocity of flow, $D$ is the pipe diameter, and $\mu$ is the viscosity of the fluid.
4. The value of the Reynolds number should be greater than $2000$, then the flow through the pipe is said to be turbulent.
5. If Reynolds number is less than $2000$, the flow is said to be laminar.
6. Turbulent flow isn’t smooth and follows irregular math with lots of mixing.

Hence, A value of Reynold's number greater than $2000$ indicates turbulence.