Improved bycatch reduction in the mixed demersal trawl fishery for Norway pout (Trisopterus esmarkii)

Grimaldo, Eduardo; Brinkhof, Jesse; Herrmann, Bent; Cerbule, Kristine; Grimsmo, Leif; Pettersen, Hermann

doi:10.1016/j.ecss.2022.108189

Cited by 2 publications

(1 citation statement)

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“…This innovation facilitates the escape of undesired and juvenile fish, segregates non-target species, and augments overall catch quality. In this context, the straightforward design, consistent performance, and elevated separation efficiency of BRDs render them indispensable tools for species selection and bycatch mitigation [4].…”

Section: Introductionmentioning

confidence: 99%

Flow Field Pattern and Hydrodynamic Characteristics of a Grid Device Made with Various Grid Bar Spacings at Different Inclination Angles

Zhang,

Tang,

Thierry

et al. 2023

JMSE

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The grid is a crucial component in constructing grid-type bycatch reduction devices. The grid’s structural characteristics and orientation significantly impact the hydrodynamic characteristics and efficacy of the separation device. Therefore, it is essential to thoroughly understand the grid device’s hydrodynamic characteristics and flow field to optimize its structure. Thus, this study used CFD numerical simulation and flume tank experiments to investigate the effects of inclination grid angles and grid bar spacing on hydrodynamic forces and flow fields around a circular grid. The results indicated that the hydrodynamic forces acting on the circular grid increased with higher flow velocity and inclination grid angle, decreasing with smaller grid bar spacing. Flow velocity acceleration zones were observed at the upper and lower ends of the grid and between the grid bars. Additionally, upwelling and vortices were present at the back of the grid. It was found that an increase in the inclination grid angle accelerated the vortex and wake effects.

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Section: Introductionmentioning

confidence: 99%