Dynamic Analysis of A Floating Fish Cage With Different Percentages of Submersion Under Regular Waves

Abdul Shareef Shaik; Nasar Thuvanismail; Shiva Krishna Vadlakonda; Aditya Varma Chekuri

doi:10.55084/grinrey/ERT/978-81-964105-2-0_2

Authors

Abdul Shareef Shaik Department of Water Resources and Ocean Engineering, National Institute of Technology Karnataka, Mangalore, India
Nasar Thuvanismail Department of Water Resources and Ocean Engineering, National Institute of Technology Karnataka, Mangalore, India
Shiva Krishna Vadlakonda Department of Water Resources and Ocean Engineering, National Institute of Technology Karnataka, Mangalore, India
Aditya Varma Chekuri Department of Water Resources and Ocean Engineering, National Institute of Technology Karnataka, Mangalore, India

DOI:

https://doi.org/10.55084/grinrey/ERT/978-81-964105-2-0_2

Keywords:

ANSYS AQWA, Aquaculture, Sea cage farming, Numerical Methods, Floating Fish Cage

Abstract

The aquaculture industry is emerging exponentially because the demand for seafood is at its peak and the capture of fish production is reached its saturation point. Aquaculture is classified into nearshore and offshore farming. The nearshore cages are mostly flexible and subjected to calm to moderate sea conditions. Whereas offshore cages are robust and designed to withstand severe sea environmental conditions. The present article describes the hydrodynamic behavior of a semisubmersible square fish cage subjected to regular waves. The square cage is submerged by three different submergences of 50%, 75% and 100% overall depth with a constant water depth. A numerical analysis is carried out to study the hydrodynamic properties such as added mass, radiation potential damping, wave excitation force, motion responses and mooring line tension. The numerical work results are plotted and correlated with each case of different submergence. The cable tensions and responses of the cages are increasing with a decrease in the percentage of submersion. Among all the cases, the cage with full submergence showed better performance for all wave environmental conditions.