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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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | International Journal of Naval Architecture and Ocean Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2092678222000140 |
| _version_ | 1811182943224201216 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-11T09:39:00Z |
| format | Article |
| id | doaj.art-955d75d71168476eb8211663ce1d3956 |
| institution | Directory Open Access Journal |
| issn | 2092-6782 |
| language | English |
| last_indexed | 2024-04-11T09:39:00Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Naval Architecture and Ocean Engineering |
| spelling | doaj.art-955d75d71168476eb8211663ce1d39562022-12-22T04:31:21ZengElsevierInternational Journal of Naval Architecture and Ocean Engineering2092-67822022-01-0114100448Examining engineering performance of midwater trawl with different horizontal spread ratio, floatage, and weight parameters: A case study of model net for Antarctic krill fisheriesBruno Thierry Nyatchouba Nsangue, PhD0Hao Tang1Achille Njomoue Pandong2Liuxiong Xu3David Micah Adekunle4Fuxiang Hu5College of Marine Sciences, Shanghai Ocean University, Shanghai, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai, China; National Engineering Research Center for Oceanic Fisheries, Shanghai, China; Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Shanghai, China; The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai Ocean University, Ministry of Education, Shanghai, China; Center for Polar Research, Shanghai Ocean University, Shanghai, China; Corresponding author.Laboratory E3M, National High Polytechnic School of Douala, University of Douala, Douala, CameroonCollege of Marine Sciences, Shanghai Ocean University, Shanghai, China; National Engineering Research Center for Oceanic Fisheries, Shanghai, China; Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Shanghai, China; The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai Ocean University, Ministry of Education, Shanghai, China; Center for Polar Research, Shanghai Ocean University, Shanghai, ChinaCollege of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, ChinaDepartment of Marine Biosciences, Tokyo University of Marine Science and Technology, Minato, Tokyo, JapanIt 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.http://www.sciencedirect.com/science/article/pii/S2092678222000140Midwater trawlAntarctic krillFlume tankEnergy efficiencyMouth opening |
| spellingShingle | 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 International Journal of Naval Architecture and Ocean Engineering Midwater trawl Antarctic krill Flume tank Energy efficiency Mouth opening |
| 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_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_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_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 |
| topic | Midwater trawl Antarctic krill Flume tank Energy efficiency Mouth opening |
| url | http://www.sciencedirect.com/science/article/pii/S2092678222000140 |
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