Environmental Engineering Reference
In-Depth Information
Fig. 7.10
GPS positions of the boom connections
Fig. 7.11
Current profiles during three runs around the boom
Boom
The following Fig.
7.12
shows the third section
CD
of the Elorn boom plan during a
flooding tide. On the Fig.
7.12
is indicated the threshold 10
ⓦ
giving the maximal skirt
angulation, allowing oil containment without leakage under the boom by current
entertainment. To measure the boom efficiency the lightweight sticks bolted to the
section connections are compared with the threshold on Fig.
7.12
as indicated by an
arrow. The skirt angle at a connection appears to be larger than the efficiency limit.
It suggests that under these environmental conditions the boom operates outside its
efficiency limit at this time.
ʸ
[
0
,
−
1
]
Remark 7.4
We use the notation
h
V
for the vertical skirt angulation obtained
numerically and to be compared with the measure using a stick on the boom. We
suggest that this angle evaluation considers one fiber. We can define the ruban
r
=
c
×
D
where
c
is the one-dimensional boom domain and
D
the set of the vertical
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