Analysis of the Use of Stern Foil on the High Speed Patrol Boat on Full Draft Condition

Syahrudin, Muhamad Fuad; Budiyanto, Muhammad Arif; Murdianto, Muhammad Aziz

doi:10.5109/4055230

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…The optimum angle of attack of the hydrofoil will get down when increasing the hull speed, at the specific speed, the hydrofoil will lose the lift force. Total ship reduction the addition of a hydrofoil ranges from 10% to 28% depending on variations in the angle of attack [18,19]. Another factor on the effectiveness of hydrofoils is regarding the ship's draft [20], from the results of previous studies showing that the ship's draft at full load will increase the effectiveness of using hydrofoil in reducing total resistance by up to 24% [21].…”

Section: Introductionmentioning

confidence: 99%

Lift-to-Drag Ratio of the Application of Hydrofoil With Variation Mounted Position on High-Speed Patrol Vessel

Budiyanto

Prawira

Dwiputra

2021

CFDL

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The hydrofoil is one of the hydrodynamic support technologies for marine vehicles that provide a high performance and are feasible to operate. The mounting position of hydrofoils on the hull is one of the keys to improving the hydrodynamic performance, where the existing academic literature to find the optimum position of hydrodynamic is still deficient. The objective of this study is to compare the mounting locations of hydrofoil in the horizontal axis in a high-speed patrol vessel. The comparison result is based on the computational fluid dynamics where the basic model was validated using experimental data. Three mounting location cases of hydrofoils were performed i.e. middle section, stern section, and behind the stern. The result shows that the optimal hydrofoil mounting position is after the transom. In this position, the value of the lift-to-drag ratio is higher by an average of 10% - 29% compared to other positions depending on the speed of the ship.

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Section: Introductionmentioning

confidence: 99%

Lift-to-Drag Ratio of the Application of Hydrofoil With Variation Mounted Position on High-Speed Patrol Vessel

Budiyanto

Prawira

Dwiputra

2021

CFDL

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“…Problems arise in numerical prediction due to nonlinear effects on hydrodynamic coefficients, such as damping coefficients. The ship model's performance was highly dependent on the hydrodynamic effect 27) .…”

Section: Validationmentioning

confidence: 99%

Preliminary Modeling of Coupled Motion Response for Floating Crane and Suspended Module by Using Boundary Element Approach and Empirical Model

Firdaus,

Ali,

Hidayat

et al. 2023

Evergreen

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External forces and environments can destabilize the floating crane's performance and inflict a high risk of failure in operation. Considering this, the effect of the suspended module during the lifting operation in sea waves is investigated to evaluate the dynamic response of the floating crane. In this article, the combination of potential flow theory in the Boundary Element Method (BEM) and an empirical model is proposed for the prediction of coupled motion on the floating crane and suspended module. Calculations of multibody systems are solved using the coupled motion formula based on the frequency domain method. An analysis of the lifting operation under beam waves is examined with two variations in the weight of the suspended module. The motion characteristics are depicted with the response amplitude operator (RAO) on the nine rigid body degrees of freedom. The resonances of peak frequency occurred in the floating crane's responses due to the lifting load system. The peak frequency of the roll response on the floating crane shifted to a higher frequency due to the impact of the pendulum motion. The difference in peak response of roll motion between variations of suspended load is about 25.8 %. The acceleration response of the suspended module in the z-direction for the large module presented a lower peak frequency than the smaller module.

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“…This innovation combines the principle of a wake equalizing duct with a hydrofoil (Budiyanto, Syahrudin and Murdianto, 2020). The wake equalizing duct is a component that can increase the propulsion performance of the ship (Syahrudin, Budiyanto, and Murdianto, 2020). This component consists of two duct foil nozzles in the shape of a semicircle which are installed in two parts behind the ship and in front of the propeller (Budiyanto, Murdianto, and Syahrudin, 2020a).…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Duct Vane Application on Patrol Boats Using Computational Fluid Dynamics

Budiyanto,

Naufal,

Putra

et al. 2024

IJTech

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Fast patrol boats are designed for high performance in surveillance and warfare missions. In terms of hull technology development, the fast patrol boat commonly uses a V-type hull with hard chine. A duct vane is an innovation developed to improve the performance of patrol boats by combining the principles of wake-equalizing duct and hydrofoil. The objective of this paper is to investigate the hydrodynamic effect of the application of duct vane on the patrol boat hull design. The investigation was carried out using computational fluid dynamics that was validated using experiment data. The result of the duct vane application can improve the ship speed performance and reduce the total resistance by 40% at Fn 0.6. The results of this study also provide an overview of the influence of the duct vane on the lift force of a hard chine hull-type.

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Analysis of the Use of Stern Foil on the High Speed Patrol Boat on Full Draft Condition

Cited by 8 publications

References 18 publications

Lift-to-Drag Ratio of the Application of Hydrofoil With Variation Mounted Position on High-Speed Patrol Vessel

Lift-to-Drag Ratio of the Application of Hydrofoil With Variation Mounted Position on High-Speed Patrol Vessel

Preliminary Modeling of Coupled Motion Response for Floating Crane and Suspended Module by Using Boundary Element Approach and Empirical Model

Performance Analysis of Duct Vane Application on Patrol Boats Using Computational Fluid Dynamics

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