Evaluation of the effect of stern wedge on instability control and reduction of the resistance of a semi-planing catamaran

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YOUSEFIFARD MAHDI; Maboodi Ashkan

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Journal: JOURNAL OF MARINE ENGINEERING Year:2020 | Volume:15 | Issue:30 Page(s): 69-79

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Title

Evaluation of the effect of stern wedge on instability control and reduction of the resistance of a semi-planing catamaran

Author(s)

YOUSEFIFARD MAHDI | Maboodi Ashkan | Issue Writer Certificate

Keywords

CatamaranQ1

Semi-planing hullQ1

Stern wedgeQ1

Hydrodynamics instabilityQ1

Abstract

In this research, the main focus is on monitoring the dynamic instability created in a semi-planing catamarn and reducing the amplitude of these movements using a Stern wedge. This is done using the model analysis in different Froude numbers in both the original and modified body conditions. Numerical analysis is also provided by solving the Reynolds-averaged Navier– Stokes equations and OpenFOAM open-source code. In addition to verifying the numerical solution method based on experimental data, it can be seen that the installation of a Stern wedge of the ship has a very positive effect on reducing the range of dynamic motions in calm water. The effect of this motion decrease can also be seen in the resistance-speed chart. The most important achievement of this research is the creation of a numerical tank for simulating dynamic motions and accurate recording of details of fluid flow around the planing and Semi-planing hulls. The result of the Stern wedge installation and numerical and experimental analysis is a 12 percent reduction in ship resistance at design speed.

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APA: Copy

YOUSEFIFARD, MAHDI, & Maboodi, Ashkan. (2020). Evaluation of the effect of stern wedge on instability control and reduction of the resistance of a semi-planing catamaran. JOURNAL OF MARINE ENGINEERING, 15(30 ), 69-79. SID. https://sid.ir/paper/60935/en

Vancouver: Copy

YOUSEFIFARD MAHDI, Maboodi Ashkan. Evaluation of the effect of stern wedge on instability control and reduction of the resistance of a semi-planing catamaran. JOURNAL OF MARINE ENGINEERING[Internet]. 2020;15(30 ):69-79. Available from: https://sid.ir/paper/60935/en

IEEE: Copy

MAHDI YOUSEFIFARD, and Ashkan Maboodi, “Evaluation of the effect of stern wedge on instability control and reduction of the resistance of a semi-planing catamaran,” JOURNAL OF MARINE ENGINEERING, vol. 15, no. 30 , pp. 69–79, 2020, [Online]. Available: https://sid.ir/paper/60935/en

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