FuelsManager Defense
304 Administrator Manual
calculate external radius as:
calculate stress as
calculate increase in linear dimension factor as:
The value of S calculated is also used in correcting the total volume of the tank in
step 9.
Typical values for Youngs modulus are:
Corrected liquid volume
Step 7
The corrected volume at liquid temperature is converted to a volume at 15°C using
the volume correction factor (VCF) calculated in Step 3 as:
where PAV = Average vapor pressure (Bar)
P = Pressure in vapor space
DENL = Liquid density (kg/m
3
)
H = Liquid Level (mm)
ROUT = R + THICK
where ROUT = External radius
R = radius
THICK = Shell thickness
CORRP = 1 + F x S/YOUNG
Carbon steel
2.1 x 10
6
bar
Stainless steel
1.9 x 10
6
bar
VLC = VL x CORRT x CORRP
VLC15 = VLC x VCF
Where VLC15 = Volume @ 15°C
VLC = Volume at liquid temperature
VCF = Volume Correction Factor
S
PAV
2
-----------
2 R
3
ROUT
3
××
ROUT
3
R
3
–
-----------------------------------------
×=
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