Assessment of flow characteristics around twin rudder with various gaps using PIV analysis in uniform flow

Gim, Ok-Sok

doi:10.1016/j.oceaneng.2013.03.018

Cited by 11 publications

(5 citation statements)

References 11 publications

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“…Gambar 6 menampilkan kemampuan turning circle kiri dan kanan KMP Bontoharu dengan perbedaan jarak antar daun kemudi terhadap garis tengah membujur kapal (yR=2,3 m dan 0,9 m) pada sudut kemiringan daun kemudi ±35 0 . Penggunaan jarak antar daun kemudi terhadap garis tengah membujur kapal (yR=0,9 m) atau jarak antar daun kemudi sebagaimana yang direkomendasikan Gim [12]. Hasil simulasi menunjukan bahwa dengan jarak antar daun kemudi kapal memiliki tactical diameter (DT) kanan dan kiri masing-masing sebesar 167,50 m (3,53L) dan 169,90 m (3,58L) serta advance diameter (AD) kanan dan kiri sebesar 128,70 m (2,81L) dan 130,10 m (2,83L) Hasil turning circle ini lebih besar masing-masing 2,15% dan 2,88% untuk tactical diameter dan 1,98% dan 2,15% untuk advance diameter dibanding dengan kemampuan turning circle kapal dengan jarak antar daun kemudi (yR=2,3m).…”

Section: Hasil Dan Pembahasanunclassified

Pengaruh Sudut Kemiringan dan Jarak antar Daun Kemudi Terhadap Kinerja Maneuvering KMP Bontoharu

Muhammad

Paroka

Rahman

et al. 2019

Kapal

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Kapal ferry ro-ro sesuai fungsinya sebagai kapal penyeberangan penumpang dan kendaraan antar pulau memiliki karakteristik yang berbeda dibanding kapal niaga pada umumnya, khususnya pengunaan sistem kemudi ganda dengan rasio jarak antar daun kemudi yang relatif besar, hal ini sangat berdampak terhadap kemampuan olah gerak kapal. Penelitian ini bertujuan untuk menganalisis kemampuan maneuvering kapal ferry melalui pengaturan sudut kemiringan dan jarak antar daun kemudi. Program MATLAB-Simulink digunakan dalam simulasi turning circle dan zigzag maneuvering. Program simulasi telah dikembangkan dengan konsep time domain simulation berdasarkan persamaan model matematika pergerakan kapal pada 3-DOF (Degres of Freedom) yang meliputi persamaan komponen lambung, propeler dan daun kemudi beserta koefisien hidrodinamaka didalamnya. Hasil penelitian menujukan bahwa seiring dengan bertambahnya sudut kemiringan daun kemudi dapat meningkatkan kemampuan turning circle kapal, namun sebaliknya pada gerak zigzag maneuvering. Selanjutnya dengan bertambahnya jarak antar daun kemudi dapat meningkatkan kemampuan baik turning circle dan zigzag maneuvering, namun dengan momen daun kemudi yang relatif besar maka hal ini dapat membahayakan kapal.

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Section: Hasil Dan Pembahasanunclassified

Pengaruh Sudut Kemiringan dan Jarak antar Daun Kemudi Terhadap Kinerja Maneuvering KMP Bontoharu

Muhammad

Paroka

Rahman

et al. 2019

Kapal

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“…Quite a few studies have been done for twin-propeller twin-rudder ships (Yoshimura and Sakurai 1989;Yoo et al 2006;Kim et al 2007;Kang and Hasegawa 2007;Khanfir et al 2008Khanfir et al , 2009Tabaczek 2010;Khanfir et al 2011;Dubbioso and Viviani 2012;Coraddu et al 2013;Bonci et al 2015;Dubbioso et al 2015). Additionally, the hydrodynamic characteristics of each rudder in twinrudder configurations is also affected by the interaction between the rudders (Gim 2013;.…”

Section: Multiple Ruddersmentioning

confidence: 99%

Sixty years of research on ship rudders: effects of design choices on rudder performance

Liu

Hekkenberg

2016

Ships and Offshore Structures

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Rudders are primary steering devices for merchant ships. The main purpose of using rudders is to generate forces for course keeping and manoeuvring. In exceptional cases, rudders are also used for emergency stopping and roll stabilisation. Furthermore, rudders affect propeller thrust efficiency and total ship resistance. Therefore, rudders are important to navigation safety and transport efficiency. The performance of rudders depends on the rudder hydrodynamic characteristics, which are affected by the design choices. Scholarly articles concerning the design of rudders date back more than 60 years. Moreover, a lot of knowledge fragments of rudders exist in literature where ship manoeuvrability and fuel consumption are discussed. It is worthwhile to gather this information not only for researchers to advance the state-of-the-art development but also for designers to make proper choices. To have a contemporary vision of the rudders, this paper presents a consolidated review of design impacts on rudder performance in ship manoeuvrability, fuel consumption, and cavitation. The discussed design choices are rudder working conditions (Reynolds numbers and angles of attack), profiles (sectional shapes), properties (area, thickness, span, chord, and rudder aspect ratios), types (the position of the stock and the structural rudder-hull connection), and interactions (among the hull, the propeller, and the rudder). Further research is suggested on high-lift rudder profiles, multiplerudder configurations and interactions among the hull, the propeller, and the rudder. Recommendations for industry practices in the selection of the rudder design choices are also given. Nomenclature Abbreviation CFD Computational Fluid Dynamics PRS Propeller-rudder systemsRe Reynolds number Greek Symbols

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“…Other parameters that affect ships' maneuvering performance include the distance of spacing between single rudders in twin-rudder ships. Gim (2013) conducted a twin-rudder performance test in a circulating water channel using particle image velocimetry (PIV). He set the distance between two single rudders to 0.5-1.0 times the chord length of the rudder.…”

Section: Introductionmentioning

confidence: 99%

Twin-Rudder-System Configurations’ Impact on Ferry Ships’ Course-Keeping Ability under Windy Conditions

Muhammad¹,

Paroka²,

Rahman³

et al. 2021

IJTech

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Ship course-keeping plays a vital role in navigation safety, especially when a ship is operating under windy conditions. A method to control ship movements through rudder-system configuration is necessary to stabilize a ship's course. This paper describes the twin-rudder-system configuration design's impact on a ship's course-keeping ability under windy conditions. A timedomain simulation using the MATLAB-Simulink program was developed for this purpose. A proportional integral derivative (PID) controller was used to adjust the ship's heading angle according to the desired path. Several parameters-such as relative wind velocity and directionswere accounted for in the simulation. The result shows that, at a wind direction of 88 o , the ship's course-keeping speed decreased; however, increasing wind velocity caused a large deviation in the ship's heading angle. Meanwhile, the ship's course-keeping speed increased with rising windspeed directions of 219 o . The ship's course-keeping time, at around 219 o under the simulation's wind direction, was 11.84% lower than during a previous sea-trial. A possible reason for this difference is that the simulation excluded waves and currents.

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Assessment of flow characteristics around twin rudder with various gaps using PIV analysis in uniform flow

Cited by 11 publications

References 11 publications

Pengaruh Sudut Kemiringan dan Jarak antar Daun Kemudi Terhadap Kinerja Maneuvering KMP Bontoharu

Pengaruh Sudut Kemiringan dan Jarak antar Daun Kemudi Terhadap Kinerja Maneuvering KMP Bontoharu

Sixty years of research on ship rudders: effects of design choices on rudder performance

Twin-Rudder-System Configurations’ Impact on Ferry Ships’ Course-Keeping Ability under Windy Conditions

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