Assessment of wave induced higher order resonant vibrations of ships at forward speed

Riesner, Malte; Moctar, Ould el

doi:10.1016/j.jfluidstructs.2021.103262

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…In principle, the driving force of the ship's rudder is strongly influenced by the design, propulsion system, and steering system. Many of these factors directly affect the fluid power and torque acting on the steering blades [13]. Another situation that will have an impact is the condition of the rudder that is too large, causing the rudder propulsion engine to not match the rudder when the ship turns in direction.…”

Section: Ruddermentioning

confidence: 99%

Comparative Study of Rudder Performance of Single Plate and Fishtail of SPOB Ship Using CFD Method

Wulandari

Dewanagara²,

Pawara³

et al. 2022

CFDL

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Rudder is the most important hydrodynamic control surface on a ship to control horizontal movement. An important function of the rudder is to develop a force concerning orientation and motion relative to the water. The widely used type is the conventional type. However, the other types of rudders, other than the conventional type, are the single plate and fishtail types. This study aims to analyze the difference in performance between the single plate rudder on the Adeline 01 spob (self propeller oil barge) ship and the fishtail rudder on the value of lift force and drag force as well as find out the comparison of the two Rudders on the maneuvering force of the Adeline 01 spob ship. The method used was the Clark equation with the help of a CFD-based application to determine the performance of the ship lifts force and drag force by varying the turning angle by 5°, 10°, 15°, 20°, 25°, and 30°. The results obtained from this study was the Fishtail has better maneuverability at 5° and 10° angle variations with lift coefficient values of 0.0398 and 0.0522, and with Steady Turning Diameter (STD) values of 1882.9 m and 717.83 m. On another hand, the Single Plate rudder has better maneuverability at angle variations of 15° and 20° with lift coefficient values of 688.30 m and 330.77 m, and with STD values of 688.30 m and 330.77 m. At the angle variations of 25° and 30°, Rudder Fishtail has better maneuverability with lift coefficient values of 0.7712 and 0.9993, and with Steady Turning Diameter (STD) values of 53.40 m and 35.92 m

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Section: Ruddermentioning

confidence: 99%

Comparative Study of Rudder Performance of Single Plate and Fishtail of SPOB Ship Using CFD Method

Wulandari

Dewanagara²,

Pawara³

et al. 2022

CFDL

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“…Sloshing adalah gerakan free surface cairan yang bergerak gerak menghantam dinding batasan pada sebuah tangki atau ruang muat yang diakibatkan oleh cairan muatan yang tidak penuh menyebabkan deformasi besar di dinding tangki atau ruang muat serta bagian-bagian struktur lainnya [3]. Gerak cairan muncul karena gerakan transverse sloshing pada wadah yang dapat terjadi dalam berbagai keadaan [4]. Kondisi muatan yang tidak penuh dapat menyebabkan adanya sloshing dalam tangki dimana kondisi ini sangat fatal jika terus terjadi karena dapat menyebabkan kelelahan struktur [5]- [6].…”

Section: Pendahuluanunclassified

Analisis Umur Kelelahan Struktur Ruang Muat Kapal Spob Akibat Beban Sloshing

Wulandari

2022

JTT (Jurnal Teknologi Terpadu)

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Kapal self-propeller oil barge (SPOB) yang merupakan jenis kapal khusus untuk mengangkut muatan minyak mentah yang memiliki penggerak sendiri yang dapat menekan biaya operasional dalam pendistribusian. Menurut data dari International Energy Agency (IEA), pada tahun 2023 kebutuhan minyak dunia meningkat menjadi 100.4 juta barel. Karena peningkatan kebutuhan minyak dunia yang meningkat, maka proses eksplorasi dan eksploitasi juga ikut meningkat sehingga kapal ini juga pengoperasian pelayarannya meningkat. Selama pelayaran, kapal diharuskan mampu bertahan dikondisi beban muatan berulang yang terjadi selama pelayaran. Beban muatan berulang yang terjadi secara terus menerus dapat mengakibatkan kelelahan pada struktur kapal dan akan membahayakan kapal. Maka diperlukan analisis fatigue life terhadap konstruksi struktur kapal. Penelitian dilakukan dengan memvariasikan beban muatan kapal dengan variasi 40%, 50%, 60%, dan 70% menggunakan metode elemen hingga. Hasil penelitian didapatkan nilai tegangan maksimal dari variasi beban muatan 70% adalah 117,08 MPa dengan fatigue life 38,57 tahun, beban muatan 60% adalah 114,74 Mpa dengan fatigue life 42,55 tahun, beban muatan 50% adalah 96,025 Mpa dengan fatigue life 80,28 tahun, dan beban muatan 40% adalah 96,01 Mpa dengan fatigue life 83,14 tahun.

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Calculation of ship motions in steep waves with restoring and Froude-Krylov forces on an adaptive panel mesh with Gauss and analytic integration methods

Wermbter,

Abdel-Maksoud

2024

J Hydrodyn

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Assessment of wave induced higher order resonant vibrations of ships at forward speed

Cited by 10 publications

References 25 publications

Comparative Study of Rudder Performance of Single Plate and Fishtail of SPOB Ship Using CFD Method

Comparative Study of Rudder Performance of Single Plate and Fishtail of SPOB Ship Using CFD Method

Analisis Umur Kelelahan Struktur Ruang Muat Kapal Spob Akibat Beban Sloshing

Calculation of ship motions in steep waves with restoring and Froude-Krylov forces on an adaptive panel mesh with Gauss and analytic integration methods

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