Numerical simulation of water current in a semi-closed fish cage for designing water re-circulation system

Abstract

This study aims to optimize water currents in semi-closed fish cages to enhance water recirculation systems for aquaculture. By combining Particle Image Velocimetry (PIV) experiments and numerical simulations, flow characteristics and dissolved oxygen (DO) are analyzed. Results reveal that parameters like inlet angles and hole numbers significantly impact characteristics of flow fields. For simulating DO, a customized solver is developed. Optimized setups can improve fish health, oxygen levels, and waste removal efficiency, contributing to sustainable aquaculture. The findings offer theoretical foundations for designing advanced aquaculture systems, emphasizing stable environments.