Experimental and Numerical Study of Effects of the Application of Hydrofoil on Catamaran Ship Resistance

Ahmad Firdhaus, I. Ketut Suastika

2019

Abstract

The use of hydrofoil on a catamaran can reduce the ship's resistance at a certain speed. The reduction of ship resistance occurs because of the lifting force that lifts the ship's hull above the waterline to reduce the wet surface area. This research aims to study the effect of adding hydrofoil in the hull of a catamaran on the ship's total resistance using experimental and numerical CFD methods. A 44m passenger catamaran was considered with two variations of hydrofoil: one hydrofoil on the bow section and two hydrofoils (one on the bow section and one on the stern section). The hydrofoil is rectangular NACA 641-212 section and aspect ratio of 16,34. The results indicate increasing ship resistance instead of decreasing on the catamaran with the hydrofoil. At service speed (Fr=0,7), the Total resistance value occurs in case 1 (catamaran without hydrofoil) is 114.59 kN, case 2 (catamaran with added one foil on the bow section), and case 3 (catamaran with added foil on both bow and stern section) are respectively 31% and 59% higher than the catamaran without hydrofoil. These data show that not all existing catamaran vessels can be added hydrofoil between the demihulls.

Paper Citation

in Harvard Style

Firdhaus A. and Suastika I. (2019). Experimental and Numerical Study of Effects of the Application of Hydrofoil on Catamaran Ship Resistance. In Proceedings of the 4th International Conference on Marine Technology - Volume 1: senta, ISBN 978-989-758-557-9, pages 104-110. DOI: 10.5220/0010854400003261

in Bibtex Style

@conference{senta19,
author={Ahmad Firdhaus and I. Ketut Suastika},
title={Experimental and Numerical Study of Effects of the Application of Hydrofoil on Catamaran Ship Resistance},
booktitle={Proceedings of the 4th International Conference on Marine Technology - Volume 1: senta,},
year={2019},
pages={104-110},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010854400003261},
isbn={978-989-758-557-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Marine Technology - Volume 1: senta,
TI - Experimental and Numerical Study of Effects of the Application of Hydrofoil on Catamaran Ship Resistance
SN - 978-989-758-557-9
AU - Firdhaus A.
AU - Suastika I.
PY - 2019
SP - 104
EP - 110
DO - 10.5220/0010854400003261