Studi Numerik Dampak Wave Pattern Ship Terhadap Floating Jetty dan Boat Moored untuk Transfer Crew

Hutagaol, Jhosua Gilbert (2025) Studi Numerik Dampak Wave Pattern Ship Terhadap Floating Jetty dan Boat Moored untuk Transfer Crew. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5020211027-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (6MB) | Request a copy

Abstract

Penelitian ini bertujuan untuk menganalisis karakteristik wave pattern yang dihasilkan oleh pergerakan barge dan boat, serta mengevaluasi pengaruhnya terhadap respons dinamik floating jetty, boat yang bersandar, dan tension mooring system yang digunakan untuk transfer crew. Keberadaan floating jetty di alur sungai yang dilalui barge berpotensi mengalami gangguan stabilitas akibat gelombang yang dihasilkan oleh pergerakan kapal tersebut. Simulasi numerik dilakukan menggunakan Maxsurf Resistance dan ANSYS AQWA dengan metode Computational Fluid Dynamics (CFD) untuk memodelkan wave pattern, dan analisis timedomain untuk mengevaluasi respons struktur. Parameter yang divariasikan meliputi tipe kapal (barge 5-8 knot dan boat 6-25 knot), jarak lateral (30, 50, 100 m), dan arah pergerakan (menuju hulu/hilir). Hasil analisis menunjukkan bahwa barge menghasilkan wave height 2,96-4,28 m dengan frekuensi dominan 0,41-0,76 Hz, sedangkan boat menghasilkan wave height 0,24-0,73 m dengan frekuensi lebih tinggi. Displacement kapal terbukti menjadi faktor dominan dalam menentukan magnitude dampak, dimana barge menghasilkan peak heave floating jetty 0,08- 1,21 m dan respons boat bersandar dengan roll hingga 29,21° serta pitch 9,25°. Kondisi kritis teridentifikasi pada barge 8 knot jarak 30 m yang menghasilkan tension mooring 137,61 kN (149,57% dari allowable tension) pada kondisi UNSAFE, sedangkan seluruh skenario boat berada dalam kategori SAFE dengan tension maksimum 3,49 kN. Berdasarkan kriteria keamanan OCDI (SF ≥ 2,0), direkomendasikan jarak lateral minimum ≥100 m untuk barge 5 knot, ≥150 m untuk barge 8 knot, dan pembatasan kecepatan maksimum ≤12 knot untuk boat pada jarak <100 m untuk menjamin keselamatan operasional floating jetty.
===================================================================================================================================
This study analyzes wave pattern characteristics generated by barge and boat movements and evaluates their effects on floating jetty dynamic response, moored boats, and mooring system tension for crew transfer. Floating jetties in river channels traversed by barges potentially experience stability disturbances from ship-generated waves. Numerical simulations using Maxsurf Resistance and ANSYS AQWA with Computational Fluid Dynamics (CFD) modeled wave patterns, while time-domain analysis evaluated structural responses. Varied parameters include vessel types (barge 5-8 knots, boat 6-25 knots), lateral distances (30, 50, 100 m), and movement directions (upstream/downstream). Results show barges generate wave heights of 2.96-4.28 m with dominant frequencies of 0.41-0.76 Hz, while boats produce 0.24-0.73 m with higher frequencies. Vessel displacement is the dominant factor determining impact magnitude. Barges produce floating jetty peak heave of 0.08-1.21 m and moored boat responses with roll up to 29.21° and pitch 9.25°. Critical conditions occur at barge 8 knots, 30 m distance, generating mooring tension of 137.61 kN (149.57% of allowable tension) in UNSAFE condition. All boat scenarios remain SAFE with maximum tension 3.49 kN. Based on OCDI safety criteria (SF ≥ 2.0), recommended minimum lateral distances are ≥100 m for barge 5 knots and ≥150 m for barge 8 knots, with maximum speed limitation ≤12 knots for boats at distances <100 m to ensure floating jetty operational safety.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	floating jetty, ship-generated waves, wave pattern, respons dinamik, tension,mooring, ANSYS AQWA, Maxsurf Resistance
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC363 Floating harbors. Including floating docks, piers, etc
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Jhosua Gilbert Hutagaol
Date Deposited:	29 Dec 2025 03:08
Last Modified:	29 Dec 2025 03:19
URI:	http://repository.its.ac.id/id/eprint/129062

Actions (login required)

View Item