Example Problem 3.5Determine the enthalpy of a 50% concentration NaOH-
water solution at 160oF.
FRICTION FACTOR
One of the common parameters we encounter when dealing with flow of fluid
is the friction factor f. In both turbulent and laminar flow, the friction factor
depends on the Reynolds number N
Re
, which describes the nature of the flow.
In the previous discussion, we mentioned that the Reynolds number can be
computed as
µ
ρDv
N=
Re
, (3.18)
where:
D = diameter of the circular pipe
v = velocity of fluid
ρ = density of fluid
µ = viscosity of fluid
In addition to the Reynolds number, the friction factor for ...
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