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Load Coefficients and Dimensions of Raschel Knitted Netting Materials in Fish Farms

Abstract

New types of fish farms are often larger and structurally more complex than conventional fish farming structures, and associated challenges concerning safety and costs increase correspondingly. Thus, increased precision in structural design is required, with estimation of hydrodynamic loads on nets as an important topic. Today, both load coefficients for nets and measured netting dimensions are given with relatively high uncertainties. New knowledge for netting materials with high solidities as well as scaled netting commonly applied in model tests is included in the presented study. Results from towing tests and the development of a new mathematical expression for local drag coefficients (for netting twines) indicate that drag coefficients are not only dependent on solidity and Reynolds number, but may also be affected by the velocity reduction and the local velocity at the twines.
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Category

Academic article

Language

English

Affiliation

  • SINTEF Ocean / Aquaculture
  • SINTEF Ocean / Energi og transport

Year

2022

Published in

Journal of Offshore Mechanics and Arctic Engineering

ISSN

0892-7219

Volume

144

Issue

4

Page(s)

1 - 8

View this publication at Norwegian Research Information Repository