Hydrodynamic characteristics of the double-winged otter board in the deep waters of the Mauritanian Sea

Xin SU; Huosheng LU; Bo FENG; Qiujie CHEN; Yunrong YAN

doi:10.1007/s00343-018-7047-3

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Hydrodynamic characteristics of the double-winged otter board in the deep waters of the Mauritanian Sea

Aquaculture and Fisheries | Updated：2023-05-19

- Hydrodynamic characteristics of the double-winged otter board in the deep waters of the Mauritanian Sea
- Chinese Journal of Oceanology and Limnology Vol. 36, Issue 4, Pages: 1417-1424(2018)
- Affiliations：
  
  1.College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
  2.Center of South China Sea Fisheries Resources Monitoring and Assessment, Guangdong Ocean University, Zhanjiang 524088, China
  3.Guangdong Provincial Engineering and Technology Research Center of Far Sea Fisheries Management and Fishing of South China Sea, Guangdong Ocean University, Zhanjiang 524088, China
- Author bio：
  
  YAN Yunrong, tuna_ps@126.com
- Funds：
- DOI：10.1007/s00343-018-7047-3
  CLC：
- Received：21 February 2017，
  
  Accepted：31 March 2017，
  
  Online First：12 June 2017，
  
  Published：2018-07
- Accepted：
Scan QR Code
Xin SU, Huosheng LU, Bo FENG, et al. Hydrodynamic characteristics of the double-winged otter board in the deep waters of the Mauritanian Sea[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(4): 1417-1424.
DOI：

Xin SU, Huosheng LU, Bo FENG, et al. Hydrodynamic characteristics of the double-winged otter board in the deep waters of the Mauritanian Sea[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(4): 1417-1424. DOI： 10.1007/s00343-018-7047-3.

摘要

Abstract

In this paper

we tested the hydrodynamic characteristics of a new

double-winged otter board that consists of a forewing

a leading edge slat and a trailing edge flap. Flume experiments were conducted in a circulating flume tank by using a model with an aspect ratio (AR) of 0.85 and a horizontal planform area (

) of 0.09 m

. The results indicated that the critical angle (

) of the model was 44°

whereas the maximum lift coefficient (

Lmax

) was up to 1.715

and the door efficiency (

) was 1.122. The attack angle (

) ranged from 30° to 48° and from 10° to 46° when the lift coefficient (

) and door efficiency (

) were greater than 1.2 and 1.0

respectively. To compare the difference between double-winged otter board and traditional Morgere Polyvalent Ovale

same model of Morgere Polyvalent Ovale was also tested under the same experimental conditions. The critical angle (

) and maximum of lift coefficient (

Lmax

) of the doublewinged otter board were 37.5% and 14.6% larger than those of the Morgere Polyvalent Ovale. Therefore

we concluded that the novel

double-winged otter board was more suitable for bottom trawling fisheries in the deep water of the Mauretania Sea due to its better hydrodynamic characteristics and stability.

关键词

Keywords

references

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