Dynamic Response of Circular, Hexagonal and Rectangular Shaped Floating Fish Cage in Waves

M. Romdonul Hakim, Yuni A. Wibowo

2018

Abstract

A three dimension (3D) model of floating fish cage in both regular and irregular waves is investigated by numerical simulations. The model vary in the geometry of circular, hexagonal and rectangular/square shaped. Main purpose of this research is to develop a comparison of floating fish cage responses between the models. Frequency domain analysis is performed to investigate the responses in both regular and irregular waves. The fish cage model comprises floating collar with two concentric HDPE tubes and held together by the horizontal and vertical braces. The benchmark model of circular fish cage is adopted from Shen [1], OD fish cage = 60m, then it is modified into hexagonal and rectangular shaped with nearly dimension from circular shaped. The model was assumed in rigid state and excluding flexible nets in order to simplify the computation. Dynamic analysis was performed in free-floating condition by calculating the hydrodynamic properties i.e. added mass, damping and wave oscillation forces in three-dimensional diffraction theory. The corresponding analysis reveal that the response of circular fish cage has the largest amplitude in heave and pitch motion than hexagonal and rectangular model. The following condition is emerged in accordance of viscous damping of each geometry.

Paper Citation

in Harvard Style

Hakim M. and Wibowo Y. (2018). Dynamic Response of Circular, Hexagonal and Rectangular Shaped Floating Fish Cage in Waves.In Proceedings of the 3rd International Conference on Marine Technology - Volume 1: SENTA, ISBN 978-989-758-436-7, pages 20-26. DOI: 10.5220/0008544900200026

in Bibtex Style

@conference{senta18,
author={M. Romdonul Hakim and Yuni A. Wibowo},
title={Dynamic Response of Circular, Hexagonal and Rectangular Shaped Floating Fish Cage in Waves},
booktitle={Proceedings of the 3rd International Conference on Marine Technology - Volume 1: SENTA,},
year={2018},
pages={20-26},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008544900200026},
isbn={978-989-758-436-7},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 3rd International Conference on Marine Technology - Volume 1: SENTA,
TI - Dynamic Response of Circular, Hexagonal and Rectangular Shaped Floating Fish Cage in Waves
SN - 978-989-758-436-7
AU - Hakim M.
AU - Wibowo Y.
PY - 2018
SP - 20
EP - 26
DO - 10.5220/0008544900200026