Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries
It is necessary to investigate the effectiveness of the midwater trawl in reducing fuel consumption and increasing catch performance for the development and improvement of the Antarctic krill fisheries. A 1/35 scale trawl model for Antarctic krill fisheries was designed based on modified Tauti'...
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ftdoajarticles:oai:doaj.org/article:955d75d71168476eb8211663ce1d3956 2023-05-15T13:52:23+02:00 Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries Bruno Thierry Nyatchouba Nsangue, PhD Hao Tang Achille Njomoue Pandong Liuxiong Xu David Micah Adekunle Fuxiang Hu 2022-01-01T00:00:00Z https://doi.org/10.1016/j.ijnaoe.2022.100448 https://doaj.org/article/955d75d71168476eb8211663ce1d3956 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2092678222000140 https://doaj.org/toc/2092-6782 2092-6782 doi:10.1016/j.ijnaoe.2022.100448 https://doaj.org/article/955d75d71168476eb8211663ce1d3956 International Journal of Naval Architecture and Ocean Engineering, Vol 14, Iss , Pp 100448- (2022) Midwater trawl Antarctic krill Flume tank Energy efficiency Mouth opening Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989 article 2022 ftdoajarticles https://doi.org/10.1016/j.ijnaoe.2022.100448 2022-12-30T19:50:23Z It is necessary to investigate the effectiveness of the midwater trawl in reducing fuel consumption and increasing catch performance for the development and improvement of the Antarctic krill fisheries. A 1/35 scale trawl model for Antarctic krill fisheries was designed based on modified Tauti's law and tested in a flume tank, and the effects of flow velocity, horizontal spread ratio, sinking force, and the ratio of buoyancy to fishing line weight on its engineering performance were analyzed in this study. The results indicated that the lower flow velocity and the ratio of buoyancy to fishing line weight conducted to the greater hydrodynamic forces and geometrical performances. The higher horizontal spread ratio and sinking force were found to have exhibited the greater drag force, net mouth opening, wing-end spread, bridle angle, net mouth area, swept area, and volume covered by trawl net. It was revealed that the engineering performance of the midwater trawl (minimal ratio between drag and swept area) was efficient when the horizontal spread ratio was at 0.55 (corresponding to the trawl horizontal opening of 64.65 m in full-scale), the sinking force was at 97.96 g (600 kg of full-scale), and the ratio of buoyancy to fishing line weight was at 4.2 and 2.6 compared to those actually used during Antarctic krill fishing. In addition, the study demonstrated that the modification of the horizontal spread ratio, sinking force, and the ratio of buoyancy to fishing line weight can be one alternative to improve the geometrical shape performance of the midwater trawl net that could improve catchability of the trawl net. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic International Journal of Naval Architecture and Ocean Engineering 14 100448 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Midwater trawl Antarctic krill Flume tank Energy efficiency Mouth opening Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989 |
spellingShingle |
Midwater trawl Antarctic krill Flume tank Energy efficiency Mouth opening Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989 Bruno Thierry Nyatchouba Nsangue, PhD Hao Tang Achille Njomoue Pandong Liuxiong Xu David Micah Adekunle Fuxiang Hu Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries |
topic_facet |
Midwater trawl Antarctic krill Flume tank Energy efficiency Mouth opening Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989 |
description |
It is necessary to investigate the effectiveness of the midwater trawl in reducing fuel consumption and increasing catch performance for the development and improvement of the Antarctic krill fisheries. A 1/35 scale trawl model for Antarctic krill fisheries was designed based on modified Tauti's law and tested in a flume tank, and the effects of flow velocity, horizontal spread ratio, sinking force, and the ratio of buoyancy to fishing line weight on its engineering performance were analyzed in this study. The results indicated that the lower flow velocity and the ratio of buoyancy to fishing line weight conducted to the greater hydrodynamic forces and geometrical performances. The higher horizontal spread ratio and sinking force were found to have exhibited the greater drag force, net mouth opening, wing-end spread, bridle angle, net mouth area, swept area, and volume covered by trawl net. It was revealed that the engineering performance of the midwater trawl (minimal ratio between drag and swept area) was efficient when the horizontal spread ratio was at 0.55 (corresponding to the trawl horizontal opening of 64.65 m in full-scale), the sinking force was at 97.96 g (600 kg of full-scale), and the ratio of buoyancy to fishing line weight was at 4.2 and 2.6 compared to those actually used during Antarctic krill fishing. In addition, the study demonstrated that the modification of the horizontal spread ratio, sinking force, and the ratio of buoyancy to fishing line weight can be one alternative to improve the geometrical shape performance of the midwater trawl net that could improve catchability of the trawl net. |
format |
Article in Journal/Newspaper |
author |
Bruno Thierry Nyatchouba Nsangue, PhD Hao Tang Achille Njomoue Pandong Liuxiong Xu David Micah Adekunle Fuxiang Hu |
author_facet |
Bruno Thierry Nyatchouba Nsangue, PhD Hao Tang Achille Njomoue Pandong Liuxiong Xu David Micah Adekunle Fuxiang Hu |
author_sort |
Bruno Thierry Nyatchouba Nsangue, PhD |
title |
Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries |
title_short |
Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries |
title_full |
Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries |
title_fullStr |
Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries |
title_full_unstemmed |
Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheries |
title_sort |
examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: a case study of model net for antarctic krill fisheries |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.ijnaoe.2022.100448 https://doaj.org/article/955d75d71168476eb8211663ce1d3956 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill |
genre_facet |
Antarc* Antarctic Antarctic Krill |
op_source |
International Journal of Naval Architecture and Ocean Engineering, Vol 14, Iss , Pp 100448- (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2092678222000140 https://doaj.org/toc/2092-6782 2092-6782 doi:10.1016/j.ijnaoe.2022.100448 https://doaj.org/article/955d75d71168476eb8211663ce1d3956 |
op_doi |
https://doi.org/10.1016/j.ijnaoe.2022.100448 |
container_title |
International Journal of Naval Architecture and Ocean Engineering |
container_volume |
14 |
container_start_page |
100448 |
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1766256669070721024 |