Experimental Numerical and Optimisation Study of Oil Spill Containment Boom
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Transcript of Experimental Numerical and Optimisation Study of Oil Spill Containment Boom
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Experimental Numerical and Optimisation Study of Oil Spill
Containment Boom
Ecole d’Ingénieurs en Génie des Systèmes Industriels
La Rochelle, France.
F. Muttin, S. Nouchi
15-19 th May IOSC 2005
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Partnership
SIMBAR project http://simbar.eigsi.frSIMBAR project http://simbar.eigsi.frEIGSI - Structural analysisEIGSI - Structural analysisLa Rochelle University – Hydrodynamic La Rochelle University – Hydrodynamic
bassinbassinEDF R&D – Fluid Flow analysisEDF R&D – Fluid Flow analysisCEDRE - Expertise & Industrials aspectsCEDRE - Expertise & Industrials aspectsCETMEF – French Ministry coastal protectionCETMEF – French Ministry coastal protection
RITMER Network RITMER Network www.ritmer.org/fr/index.html MEDD French Governement grant MEDD French Governement grant
n°CV03000142n°CV03000142
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Geometry and Stress V=0.5 m/s
Up sideUp side
Down sideDown side
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add more a top skirt leechadd more a top skirt leech
add a bottom skirt chainadd a bottom skirt chain
Geometry and stress V=0.3 m/s
0 1 2 3
0
0.5
1
1.5
Section 3
0 1 2 3
0
0.5
1
1.5
Section 6
0 1 2 3
0
0.5
1
1.5
Section 9
-22.5996
Float & skirt only reinforcement bottom skirtFloat & skirt only reinforcement bottom skirt
0 1 2 3-1
-0.5
0
0.5
1
1.5
2Section 3
0 1 2 3-1
-0.5
0
0.5
1
1.5
2Section 6
0 1 2 3-1
-0.5
0
0.5
1
1.5
2Section 9
7.6
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With chain and leech V=0,3 m/sWith chain and leech V=0,3 m/s
With chain V=0,4 m/sWith chain V=0,4 m/s
Geometry and stress
0 1 2 3
0
0.5
1
1.5
Section 3
0 1 2 3
0
0.5
1
1.5
Section 6
0 1 2 3
0
0.5
1
1.5
Section 9
-31°
0 1 2 3
0
0.5
1
1.5
Section 3
0 1 2 3
0
0.5
1
1.5
Section 6
0 1 2 3
0
0.5
1
1.5
Section 9
θ -36°
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Boom Conception Variation
Stiffness increase (*2) of the skirt bottom,with iso-elasticity of the wholle skirt (stiffness decrease of 2/3 of the rest of the skirt)
Référence n°1L 30 mR 55 cmh 75 cmP 200 mbarV 0.3 m/sW 12kg/m + 1kg/m fabricE 450 daN/5cm <=> 5% , = 0.45
Prestress of the skirt bottom. The ratio 5/8% means 5/8*30m/100 of lenghtless
Lest chain under the skirt bottom . The height is 25 cm between skirt and lest
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Skirt Angulationthêta section jupe milieu élément (degrés)
4
6
8
10
12
Ba
s d
e ju
pe
2x
plu
s ra
ide
(2/3
su
r re
ste
)
Pré
con
tra
int
5/8
%
Ab
ais
sem
en
t le
st 2
5 c
m
Ré
fére
nce
L3
0m
P 2
00
mb
ar
v 0
,3 m
/sn
u 0
,45
E
90
00
00
N/m
thêta section jupe milieu élément(degrés)
Référence
thêta (Smax bas jupe - Smax haut jupe) V 0,3 m/s
4
6
8
10
12
0,0 1000,0 2000,0 3000,0 4000,0 5000,0
Smax bas jupe- Smax haut jupe (N/m)
thêt
a (°
)
Série1
Linéaire (Série1)
Référence
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Boom Section of 150 m,V = 0.3 m/s
Geometry of sections (without chain):
Stress:
Central skirt angulation 4°
Up-stream
Down-stream
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Complete boom contingency plan 750 m
Provisory Geometry, coffers fixed
Provisory Internal Stress, coffers fixedProvisory Geometry,
without anchorage system
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Hydrodynamic
CEDRE – CEDRE –
polludrome visualisation testpolludrome visualisation test
LNHE –LNHE –
SPH numerical methodSPH numerical method Doc. CEDRE
Doc. LNHE EDF
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Structural computations
L 30 m V 0.3m/s L 30 m V 0.3m/s
Stress balance during iteration Stress balance during iteration solutionssolutions
boom without skirt bottom chainboom without skirt bottom chain
Présentation Microsoft PowerPoint
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Conclusion
Boom modelling (coastal fluid flow Boom modelling (coastal fluid flow Telemac2D)Telemac2D)
Coastal zone-test choiceCoastal zone-test choice Industrial progress implementationIndustrial progress implementation