Question

What is the Reynolds number for flow in a pipe with a diameter of 0.05 m, velocity of 2 m/s, and kinematic viscosity of $1 \times 10^{-6}$ m\(^2\)/s?

• A. 1000
• B. 2000
• C. 4000
• D. 5000

Hint:

Reynolds number is a dimensionless number used to predict flow patterns in different fluid flow situations.

Answer 1

The Correct Option is A

Reynolds number is given by: \[ Re = \frac{VD}{\nu} \] Substituting the values: \[ Re = \frac{2 \times 0.05}{1 \times 10^{-6}} = 1000 \]