Question

Calculate the reynolds number if a fluid flows through a diameter of 80 mm with velocity 5 m/s having density of 1400 Kg/m3 and having viscosity of 0.9 Kg/ms.

• A. 622.22
• B. 623.22
• C. 722.22
• D. 822.22

Answer 1

The correct option is A 622.22

Given : $\mu =0.9kg/ms$, $\rho =1400kg/m^3$, $l=80mm=0.08m$, $v=5m/s$

Reynolds number $=\frac{\rho vl}{\mu }=\frac{1400\times 5\times 0.08}{0.9}=622.22$