The Numerical Simulation of Hydrodynamics of Fishing Net Cage

Abstract

The aquaculture industry is playing an increasingly important role in the fish production industry as the demand for seafood increases. At present, the net cage is widely used in aquaculture industry all over the world. Because of environmental impact concerns and limited near-shore locations, more and more net cages for aquaculture will be located offshore and exposed to more waves and currents. Thus, knowledge of their hydrodynamic behavior of net cage under the action of waves and current is of great importance to the design of gravity cages in the open sea. Techniques used to investigate the facilities have typically included the use of scaled physical and numerical models, and, where possible, field measurements. Comparing model tests and field measurement, the numerical simulation method is low in cost, saving time and being easy to manage. In this chapter, the latest progress of this technology by our research group will be introduced in detail. The contents of the progresses include the following parts: The numerical simulation of net cage in irregular waves; The numerical simulation of multi-net cage in waves; The numerical simulation of flow through and around fishing net cage