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Model test on the net mouth shape of a gape net according to current speeds in Jindo area, Korea

전남 진도지역 낭장망의 유속에 따른 망구형상 변화에 관한 모형실험

  • Received : 2015.02.08
  • Accepted : 2015.02.26
  • Published : 2015.02.28

Abstract

A model net experiment of the gape net for anchovy in Jindo, Jeollanam-do was carried out to investigate the net shape and hydrodynamic resistance using circulating water channel. The model net was made 1/33 down scale by Tauti's similarity method and the range of experimental current speed was from 0.5 knot to 3.5 knot (increasing 0.5 knot interval). The net mouth height in 0.5 knot of the minimum experiment current speed was shown 26.0 cm (full-scale conversion value 8.58 m). The net mouth height and mouth area in 1.5 knot of the same current speed with a gape net fishing ground were shown 20.0 cm (full-scale conversion value : 6.60 m) and about $507.9cm^2$ (full-scale conversion value : $55.31m^2$). The net mouth height and area were decreased with increase the experimental current speed. The hydrodynamic resistance of the model net in 1.5 knot current speed was shown 1.11 kgf and the value of full-scale conversion by Tauti's method was shown 3.996 ton.

Keywords

Gape net;Model experiment;Net shape;Net mouth area;Net mouth height

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Cited by

  1. Response Prediction and Monitoring Feasibility of a Stow Net System Using Measured Environmental Data in the Southwest Coast of Korea vol.8, pp.9, 2018, https://doi.org/10.3390/app8091517

Acknowledgement

Supported by : 국립수산과학원