1) Venturimeter is the
widely used device to measure the discharge through the pipe.
2) A venturimeter consist
of a convergence ,divergence, and throat.
3) The principle of
venturimeter is that when a fluid flows through the venturimeter, it
accelerates in the convergent section and decelerates in the divergent section,
resulting in a drop in the static pressure.
4) By measuring the
difference inthe pressures at an axial station upstream of the convergent
section and at the throat, the volumetric flow rate can be estimated.
5)The flow through the
venturimeter and hence through the pipe is given by
Qactual = Actual discharge.
Qth=theoratica discharge
Cv =Discharge co-efficient.
A1 =area at the inlet side
A2 =area at the throat side
h =Differential pressure head
dh=pressure difference
g =Acceleration due to gravity
Applications:
Chemical ship tankers, gas stoves , Water
aspirators, Steam siphons Carburetors
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