Answer:
The friction factor is 0.303.
Explanation:
The flow velocity (
), measured in meters per second, is determined by the following expression:
(1)
Where:
- Flow rate, measured in cubic meters per second.
- Diameter, measured in meters.
If we know that 
and 
, then the flow velocity is:
The density and dinamic viscosity of the glycerin at 20 ºC are 
and 
, then the Reynolds number (
), dimensionless, which is used to define the flow regime of the fluid, is used:
(2)
If we know that , 
, and , then the Reynolds number is:
A pipeline is in turbulent flow when 
, otherwise it is in laminar flow. Given that flow has a laminar regime, the friction factor (
), dimensionless, is determined by the following expression:
If we get that , then the friction factor is:
The friction factor is 0.303.
