International Journal of Fisheries and Aquatic Research

International Journal of Fisheries and Aquatic Research


International Journal of Fisheries and Aquatic Research
International Journal of Fisheries and Aquatic Research
Vol. 4, Issue 4 (2019)

Effect of mesh size, twine material and trawl gear accessories on the bottom trawls hydrodynamic performance


Nyatchouba Nsangue Bruno Thierry, Hao Tang, Liuxiong Xu, Fuxiang Hu

Nowadays, fishing industry is facing several constraints such as increased fuel prices and declining fish stocks. To improve profitability and ensure the sustainability of the resource, many countries have worked and continue to find ways to make bottom trawls more efficient and more selective. We reviewed how researchers approached the question using different models to make bottom trawls more efficient and selective. The dynamic behavior of a bottom trawl is largely affected by its shape, design, construction, rigging as well as the hydrodynamic and frictional forces experienced while towing along the seabed. In order to make the bottom trawl more economical in terms of fuel consumption and selective, many researchers have worked on the flume tank experiment and on the numerical modeling taking into account several factors, namely: the trawl drag, its swept surface, the materials and the characterization of the flow around its structure. They have developed numerical methods that have combined with flume tank test and sea tests to understand and predict geometry, strength and downward forces on the seabed under different conditions. This set of works has made it possible to develop effective numerical simulation software such as Dynami T (France), Simu Trawl (Korea) and Trawl Vision PRO (Uruguay), the most used by fishing gear manufacturers and researchers.An overview of the evolution of trawl performance, the methods used, as well as an assessment of the results of each numerical modeling, experimental and numerical simulation method by different fishing gear design software, as well as their reliability of these results are conducted in order to provides valuable insights to fishing companies, trawl designers, net manufacturers, researchers and educators using numerical modeling methods and flume tank studies to improve bottom trawl performance.
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How to cite this article:
Nyatchouba Nsangue Bruno Thierry, Hao Tang, Liuxiong Xu, Fuxiang Hu. Effect of mesh size, twine material and trawl gear accessories on the bottom trawls hydrodynamic performance. International Journal of Fisheries and Aquatic Research, Volume 4, Issue 4, 2019, Pages 01-09
International Journal of Fisheries and Aquatic Research