Numerical modelling of demersal fishing net systems for design optimization

To maintain the market position of the Dutch demersal fishing industry it important to develop new sustainable fishing techniques. The design of a fishing system is a very complex optimization problem as different types of physics are involved at a wide range of scales. Traditionally fishing nets are designed based on experience and physical testing by trial and error. To speed-up the innovation process the industry requests a more deterministic approach at catch system level scale. For this reason it is proposed to develop and validate an integral model that combines the elastic deformation of the net, dynamics of gear elements, interaction with the seabed and the fluid motion based on state of the art knowledge. This provides high quality information on the flow and loads in the system that is very helpful for the industry to understand and optimize their fishing net systems in terms of fish selectivity, lower fuel consumption and emissions, and less sea bed disturbance. The tool will be applied to ongoing innovation directions: improve selectivity of the catch in the net and reduce drag and seabed friction losses.

  • Projectnummer / Project number: 18529
  • Deelnemende kennisinstellingen / Participating institutes: MARIN - Maritiem Research Instituut Nederland
  • Gebruikers / Users: 3 verenigingen, 2 co√∂peraties, 2 bedrijven, and 1 onderzoekscentrum / 3 associations, 2 cooperations, 2 companies and 1 research centre
  • Projectleider / Project leader: Dr. ir. G.H. Keetels, Technische Universiteit Delft
  • Type project / Type project: Lopend
  • Startdatum / Start date: 01-09-2020
  • Einddatum / End date: 01-09-2022
  • Programma / Programme: Onderzoek voor Duurzame Visserij (ODV) / Research towards Sustainable Fisheries (RSF)
  • Vakgebied / Discipline: Technische wetenschappen / Engineering sciences