Analisis Numerik Added Resistance Kapal Crew Boat “ORELA” Dengan Variasi Periode Gelombang Pada Kecepatan Operasional Kapal

Putri, Dita Adhelia (2022) Analisis Numerik Added Resistance Kapal Crew Boat “ORELA” Dengan Variasi Periode Gelombang Pada Kecepatan Operasional Kapal. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Crew boat merupakan alat transportasi laut yang digunakan untuk mobilitas pekerja lepas pantai serta supply logistik yang dibutuhkan offshore platform. Crew boat KCT-1901 dikategorikan sebagai kapal planing dengan bentuk body hard chine. KCT-1901 membutuhkan tenaga tambahan ketika berlayar di laut. Hal ini disebabkan kapal mengalami gerakan heave dan pitch pada perairan bergelombang yang dapat mengakibatkan adanya added resistance dan added EHP. Studi ini bertujuan untuk memprediksi besarnya added resistance dan added EHP menggunakan program computational fluid dynamic (CFD) metode simulasi free surface multi fluid pada kondisi operasi calm water dan gelombang reguler dengan beberapa kondisi Froude number (Fr) dan periode gelombang. Verifikasi hasil CFD dengan metode Savitsky untuk calm water dan eksperimen untuk gelombang reguler. Nilai hambatan total terbesar dengan CFD pada calm water terdapat pada Fr 0.72 sebesar 38.978 kN. Rata-rata persentase deviasi hambatan total CFD dengan metode Savitsky pada calm water adalah 0.07% dan CFD dengan eksperimen pada gelombang reguler adalah 4.37%. Nilai hambatan total terbesar dengan CFD pada gelombang reguler terjadi pada Fr 0.72 periode gelombang 2.58 detik sebesar 26.626 kN. Nilai added resistance terbesar dalam studi ini terjadi pada Fr 0.72 yang beroperasi di gelombang reguler setinggi 0.5 m dengan periode 2.58 detik sebesar 26.626 kN. Karakteristik nilai added resistance kapal crew boat KCT-1901 dalam studi ini berbanding lurus terhadap kecepatan kapal serta berbanding terbalik terhadap periode gelombang. Sedangkan nilai added EHP terdapat pada Fr 0.72 gelombang reguler periode 2.58 detik dengan nilai sebesar 246.553 HP.
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Crew boat is a marine transportation for the mobility of offshore workers as well as logistical supply needed for the offshore platform. Crew boat KCT-1901 is categorized as a planing boat with body hard chine. KCT-1901 needs an added power when it is sailing through a seaway. The reason behind this is because when a ship sails through a seaway, the ships experienced a heave and pitch motion that results in added resistance and added EHP. This study aims to predict the amount of added resistance and added EHP using the computational fluid dynamic (CFD) simulation free surface multi fluid method in calm water and regular wave operating conditions with several Froude number (Fr) and wave periods. Verification CFD using Savitsky method for calm water and experiment for regular wave. The largest total resistance value with CFD on calm water is at Fr 0.72 of 38.978 kN. The average percentage deviation of total resistance with CFD and Savitsky method on calm water is 0.07% and CFD with experiments on regular waves is 4.37%. The largest total resistance value with CFD on regular waves occurs at Fr 0.72 with wave period 2.58 seconds of 26.626 kN. The largest added resistance value in this study occurs at Fr 0.72 which operates in regular waves as high as 0.5 m with a period of 2.58 seconds of 26.626 kN. The characteristics of the added resistance value of KCT-1901 in this study are directly proportional to the speed of the ship and inversely proportional to the wave period. While the largest added EHP value is found at Fr 0.72 regular with wave period 2.58 seconds of 246.553 HP.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Kapal Crew Boat, Added Resistance, Added EHP, CFD, Added Resistance, Added EHP
Subjects:	V Naval Science > V Naval Science (General) > V220 Naval ports, bases, reservations, docks, etc. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	06 Nov 2025 06:22
Last Modified:	06 Nov 2025 06:22
URI:	http://repository.its.ac.id/id/eprint/128755

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