CE 321
Lab # 3
Bernoulli’s Equation
General Info:

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Experiment
Objectives:
1
to investigate the validity of Bernoulli’s equation as applied to a tapering
horizontal zone
2
to determine if the variations in pressure can be predicted by Bernoulli’s equation
for tapering horizontal zone.
Theory
Bernoulli’s Equation:
2
2
1
1
2
2
1
2
2
2
V
P
V
P
z
z
g
g
(1)
If horizontal tube leveled correctly, then z
1
= z
2
, and Equation 1 is then simplified to
2
2
1
1
2
2
1
2
2
2
V
P
V
P
z
z
g
g
2
2
1
1
2
2
2
2
V
P
V
P
g
g
(2)
1
P
pressure head or static head = h
s
2
1
2
V
g
velocity head = h
v
Total head, h
T
= h
s
+ h
v
=
2
2
V
P
g
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CE 321
Lab # 3
Bernoulli made some assumptions for his equation to work:
1.
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 Spring '05
 SHUGUANGLI
 Fluid Dynamics, Bernoulli, Hydraulic head, total head

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