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Problem 3.62
[Difficulty: 2]
Given:
Circular access port of known diameter in side of water standpipe of
known diameter.
Port is held in place by eight bolts evenly spaced
around the circumference of the port.
Center of the port is located at a know distance below the free surface of
the water.
d
0.6 m
⋅
=
D7
m
⋅
=
L1
2
m
⋅
=
Find:
(a) Total force on the port
(b) Appropriate bolt diameter
Solution:
We will apply the hydrostatics equations to this system.
Governing Equations:
dp
dh
ρ
g
⋅
=
(Hydrostatic Pressure  y is positive downwards)
d
L
D
h
F
R
p
c
A
⋅
=
(Hydrostatic Force)
σ
F
A
=
(Normal Stress in bolt)
Assumptions:
(1) Static fluid
(2) Incompressible fluid
(3) Force is distributed evenly over all bolts
(4) Appropriate working stress in bolts is 100 MPa
(5) Atmospheric pressure acts at free surface of water and
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This note was uploaded on 10/19/2011 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.
 Fall '07
 Lear
 Fluid Mechanics

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