文献类型：期刊文献

中文题名：Hydrodynamic characteristics of the double-winged otter board in the deep waters of the Mauritanian Sea

英文题名：Hydrodynamic characteristics of the double-winged otter board in the deep waters of the Mauritanian Sea

作者：Su Xin[1];Lu Huosheng[1,2,3];Feng Bo[1,2,3];Chen Qiujie[1];Yan Yunrong[1,2,3]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Ctr South China Sea Fisheries Resources Monitorin, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Guangdong Prov Engn & Technol Res Ctr Far Sea Fis, Zhanjiang 524088, Peoples R China

年份：2018

卷号：36

期号：4

起止页码：1417

中文期刊名：Journal of Oceanology and Limnology

外文期刊名：JOURNAL OF OCEANOLOGY AND LIMNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000441231100036)、CSTPCD、、Scopus(收录号：2-s2.0-85051301548)、WOS、CSCD2017_2018、CSCD

基金：Supported by the Technological Research on Reforming Otter Boards of Bottom Trawl in Mauretania and Guinea (China National Fisheries Corporation, CNFC), Technological Research on Transformation and Upgrading of Shrimp Trawl in Sierra Leone (CNFC), Far Sea Fisheries Resources Monitoring and Assessment of South China Sea (No. 2013050212)

语种：英文

中文关键词：水动力;升力系数;稳定性;船舶工程

外文关键词：Mauretania; deep waters; bottom trawl; double-winged otter board; flume experiment

中文摘要：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( S) of 0.09 m^2. The results indicated that the critical angle( α_(cr)) of the model was 44°, whereas the maximum lift coefficient( C_(Lmax)) was up to 1.715, and the door efficiency( K) was 1.122. The attack angle( α) ranged from 30° to 48° and from 10° to 46° when the lift coefficient( C_L) and door efficiency( K) 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( α_(cr)) and maximum of lift coefficient( C_(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.

外文摘要：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 (S) of 0.09 m(2). The results indicated that the critical angle (alpha(cr)) of the model was 44A degrees, whereas the maximum lift coefficient (C-Lmax) was up to 1.715, and the door efficiency (K) was 1.122. The attack angle (alpha) ranged from 30A degrees to 48A degrees and from 10A degrees to 46A degrees when the lift coefficient (C-L) and door efficiency (K) 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 (alpha(cr)) and maximum of lift coefficient (C-Lmax) of the double-winged 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.