Calculate the dimensionless Reynolds number,
Re = (rho)*D*V/(viscosity)
The flow is
* laminar when Re < 2300
* transitional when 2300 < Re < 4000
* turbulent when Re > 4000
The viscosity of water at 20 C is
mu = 1.002*10^-3 N*s/m^2 or kg/m*s
The pipe cross sectional area is A = 4.904*10^-4 m^2
The velocity at the flow rate mentioned is
V = (50*10^-3 m^3/s)/4.904*10^-2 m^2
= 102 m/s
The water density is 1000 kg/m^w3
Reynolds number is
(10^3)*2.5*10^-2*102/1.002*10^-3
2.5*10^6
Not even close. It is turbulent flow
water 20 degrees celsius flows through a 25 mm diameter pipe at a rate of 50 liters per minute.
is this laminar or turbulant flow or both?
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