Kajian Eksperimental dan Numeris Gerakan (Seakeeping) Kapal Crew Boat "Orela" dengan Variasi Posisi Foil Belakang di Arah Vertikal

Boazyunus, Marshall (2017) Kajian Eksperimental dan Numeris Gerakan (Seakeeping) Kapal Crew Boat "Orela" dengan Variasi Posisi Foil Belakang di Arah Vertikal. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kapal crew boat adalah kapal yang khusus untuk mengangkut pendukung – pendukung pengeboran lepas pantai seperti personil, bahan bakar, air minum dan instalasi lepas pantai seperti seperti oil platform, drilling rigs, dll. Kondisi lautan yang tidak menentu menuntut seorang ahli perkapalan untuk merancang kapal dengan gerakan (seakeeping) yang kecil.Penambahan foil belakang dapat mengurangi gerakan (seakeeping) kapal tersebut. Sehingga peneliti melakukan penelitian terhadap peletakan posisi foil belakang yang paling efisien untuk mengurangi gerakan (seakeeping) pada kapal crew boat Orela. Pengujian dilakukan pada peletakan posisi foil untuk kedalaman 0.75T, 1.0T dan 1.5T dari permukaan air, dimana T adalah sarat kapal tersebut. Peneliti menggunakan pemodelan numeris dan pengujian di towing tank. Pengujian di towing tank dilakukan pada periode 0.5 s sampai 1.7 s. Software yang digunakan untuk pemodelan numeris adalah Ansys Aqwa. Dari hasil penelitian tersebut, peletakan posisi foil belakang pada kedalaman 0.75T memberikan gerakan (seakeeping) paling baik dengan memberikan penurunan sebesar 14.99% untuk heaving dan 34.89% untuk pitching dan pada kecepatan 22 knot mengalami penurunan sebesar 3.374% untuk heaving dan 19.73% untuk pitching. ========================================================= A crew boat is a vessel specialized in the tranport of offshore support personnel, deck cargo such as fuel, water and from offshore installations such as oil platforms, drilling rigs etc. The ocean. The uncertain sea conditions require a shipdesigner to design a ship with good motion (seakeeping).The addition of foil can reduce the motion of the vessel. So, the researchers conducted research on the laying of the most efficient foil position to reduce the motion (seakeeping) on Orela crew boat. The research is performed on the laying of the foil position to a depth of 0.75T, 1.0T and 1.5T from the water surface, where T is draft of the ship. Researchers use numerical modeling and experiment test. The experiment tests are carried out in the period of 0.5 s to 1.7 s. The software used for numerical modeling is Ansys Aqwa. From the results of this research, foil at a depth of 0.75T provides the best motion by providing 14.99% decrease for heaving and 34.89% for pitching when the ship is motionless and decreasing by 3.374% for heaving and 19.73% for pitching when the ships move in 22 knots.

Item Type: Thesis (Undergraduate)
Additional Information: RSPe 623.817 1 Boa k
Uncontrolled Keywords: Seakeeping, Ansys Aqwa, Respon gelombang.
Subjects: V Naval Science > V Naval Science (General)
V Naval Science > VC Naval Maintenance > VC 270-279 Equipment of vessels, supplier,allowances,etc
Divisions: Faculty of Marine Technology (MARTECH) > Marine Transportation Engineering > 21207-(S1) Undergraduate Thesis
Depositing User: Marshall Marshall Boazyunus
Date Deposited: 12 Feb 2018 08:22
Last Modified: 05 Mar 2019 08:48
URI: http://repository.its.ac.id/id/eprint/47697

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