Putra, Chandra Maha (2016) Analisa Permodelan Gelombang Transmisi pada Floating Breakwater di Pelabuhan LNG Senoro, Banggai, Sulawesi Tengah. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Senoro Gas Development Project yang berlokasi di Senoro, Kabupaten
Banggai, Sulawesi Tengah adalah salah satu bagian dari proyek bersama
antara PT. Pertamina dan PT. Medco E&P dalam bidang eksplorasi migas.
Berdasarkan hasil survey oleh PT.Surveyor Indonesia pada ujung jetty
Pelabuhan Senoro menunjukan ketinggian gelombang signifikan masih
setinggi 2,7 meter, sedangkan persyaratan berlabuh untuk kapal berukuran
lebih besar dari 50.000 DWT adalah ketinggian gelombang pada pelabuhan
antara 0,7-1,5 meter (CDIT, 2004). Sehingga diperlukan suatu bangunan
penahan gelombang. floating breakwater menjadi salah satu solusi untuk
mengurangi ketinggian gelombang pada kasus ini. Untuk melihat performa
floating breakwater dilihat dari nilai koefisien transmisi (Kt) yang
dihasilkan untuk itu dilakukan analisa menggunakan software
computational fluid dynamic (CFD), hasil analisa pada model awal floating
breakwater dengan ukuran panjang 30 meter, lebar 20 meter dan tinggi 16
meter dengan tinggi freeboard 1 meter dihasilkan Kt 0,77 dan belum
memenuhi standart keamanan sebesar ≤ 0,56. Setelah dilakukan modifikasi
jarak floating breakwater terhadap jetty ditemukan jarak yang
menghasilakan nilai Kt yang memenuhi syarat keamanan yakni pada jarak
600 meter dengan nilai Kt= 0,55. Selain itu untuk mencari nilai Kt yang
aman dilakukan penambahan ketinggian freeboard, permodelan 1 dengan
menambahkan balok trapesium di atas breakwater dengan penambahan
ketinggian 3 meter dicapai nilai koefisien transmisi aman dengan nilai Kt=
0,45. Dengan permodelan 2 dengan menambahkan dua buah balok
trapesium di atas breakwater pada pada penambahan ketinggian 2 meter
dicapai nilai koefisien transmisi aman dengan nilai Kt = 0,48.
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Senoro Gas Development Project which located in Senoro, Banggai city, Central
Sulawesi are joint operation project between PT.Pertamina dan PT.Medco E&P in
gas exploration sector. Senoro Port is one of the gas distribution Facility which
built with 500 meters jetty to accomodate gas carrier and large ship in order to
distribute gas. According to survey data from PT.Surveyor Indonesia, the height
of significant wave height in end of the jetty is 2,7 meters. While the wave height
requirement for 50.000 DWT ship is 0,7-1,5 meters. Therefore, this port need
some breakwater structures in order to reducing wave height in this port. In order
to answer these problems, floating breakwater can be a solution for reducing wave
height in this port. In order to see the performance of a floating breakwater, using
the value of the coefficient transmission (Kt) obtained from the analysis using
software Computational Fluid Dynamic (CFD), the analysis results in an early
model of floating breakwater with a length of 30 meters, width 20 meters and
height 16 meters with a height of free surface 1 meter produced coefficient
transmission value 0.77 that do not meet the safety standards of ≤ 0.56. After the
modification of the distance floating breakwater towards the jetty is found within
that produce value coefficient transmission qualified security, that is at a distance
of 600 meters with a value of coefficient transmission 0.55. In order to gain a safe
value coefficient transmission , from model 1 by increasing the height of
trapezoidal beam on the breakwater by 3 meters, we obtained secure coefficient
transmission value 0.45 . From model 2 by increasing the height of two
trapezoidal beams over breakwater by 2 meters, we obtained secure coefficient
transmission value 0,48.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 623.812 Put a |
| Uncontrolled Keywords: | floating Breakwater, Pelabuhan, Computational Fluid Dynamic (CFD),koefisien transmisi |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 20 Feb 2018 06:57 |
| Last Modified: | 27 Dec 2018 04:24 |
| URI: | http://repository.its.ac.id/id/eprint/51302 |
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