Water flows at a speed of 6 cm s-1 through a tube of radius 1 cm. Coefficient of viscosity of water at room temperature is 0.01 poise. Calculate the Reynolds number. Is it a steady flow?
120, yes
You know,
Reynolds number, N=ρvDη
Where, ρ = density of fluid
v = velocity of flow of the fluid
D = diameter of the tube
η = coefficient of viscosity of the fluid
⇒N=1000×6100×21000.01
{all values in SI}
N = 120 {Dimensionless}, yes the flow is steady