Challenges

To develop aquaculture structure concepts for operations in exposed locations with a view to sea load response, the safety of personnel, and fish welfare.

Research tasks

Flexible structures: Improved numerical models and analytical methods applied to large and flexible structures with variable rigidity, as well as spatial systems with uncorrelated variable sea conditions. The response of each component (net pens, feed barges, flexible feed hoses, mooring systems) will be analysed, and particular focus will be directed on how they function in combination as a means of understanding the response and limitations of the systems.

Active control of structural response: In order to improve the safety and performance of aquaculture structures exposed to variable sea and currents conditions, the response of such systems will be addressed using model-based regulators that handle factors under many regimes.

New concepts for aquaculture constructions: To develop rational design requirements for aquaculture constructions based on fundamental principles as they apply to the simulation of dominant physical phenomena, load effects, and a given construction’s tolerance capability. Factors such as wear and tear, ordinary fracture limit condition and accident limit status will be investigated. Investigations will be carried out with the aim of developing concepts for the stabilisation of feed barges using active control systems, new hydrodynamic designs or fixed platforms. Technology for on-site energy production will be studied.

Improved structural components: Research will be carried out into new and existing net structures and materials in order to understand and identify wear and tear mechanisms. This knowledge can be used to reduce the risk of net tears and extend operational lifetimes. To develop objective criteria for the documentation of new and existing net materials.

Industrial relevance

This research will result in constructions that can be operated safely and reliably at exposed fish farm localities, and which are adapted to the operational fish farming requirements.

Research Manager: Heidi Moe Føre (SINTEF Ocean)