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An Analysis on the Sinking Resistance of Purse Seine - 2. In the Case of the Model Purse Seine with Different Netting Material and Sinkers -

旋網의 沈降 抵抗 解析 - 2. 網地材料와 沈子量 다른 模型網의 경우 -

  • Kim, Suk-Jong (College of Ocean Sciences, Cheju National University)
  • Published : 2004.02.01

Abstract

This study deals with an analysis on the sinking resistance for the model purse seine, in the case of different netting material and sinkers. The experiment was carried out using rune simplified model seines of knotless nettings. Dimension of model seines 420cm for corkline and 85cm for seine depth, three groups of models rigged 25, 45 and 60g with the same weighted sinkers in water were used. These were named PP-25, PA-25, PES-25, PP-45, PA-45, PES-45, PP-60, PA-60 and PES-60 seine. The densitie($\rho$) of netting materials were 0.91g/cm$cm^3$, 1.14g/cm$cm^3$ and 1.38g/cm$m^3$. Experiments carried out in the observation channel in a flume tank under still water conditions. Sinking motion was recorded by the one set of TV-camera for VTR, and reading coordinate carried out by the video digitization system. Differential equations were derived from the conservation of momenta of the model purse seines and used to determine the sinking speeds of the depths of leadline and the other portions of the seines. An analysis carried out by simultaneous differential equations for numerical method by sub-routine Runge-Kutta-Gill The results obtained were as follows : 1. Average sinking speed of leadline for the model seines rigged 60g with the same weighted sinkers in water was fastest for 12.2cm/sec of PES seine, followed by 11.4cm/sec of PA and 10.7cm/sec of PP seines. 2. The coefficient of resistance for netting of seine was estimated to be $K_D=0.09(\frac{\rho}{\rho_w})^4$ 3. The coefficient of resistance for netting bundle of seine was estimated to be $C_R=0.91(\frac{\rho}{\rho_w})$ 4. In all seines, the calculated depths of leadline closely agreed with the measured ones, each 25g, 45g, 60g of weighted sinkers were put into formulas meas.=1.04cal., meas.=0.99cal. and meas.=0.98 cal.

Keywords

Analysis on the sinking resistance;Model seine with the different netting material and sinkers;purse seine fishery

References

  1. Iitaka Y. (1954): Model experiments on the sardine purse seIne operating in Hyuganada-1, Bull. Jap. Soc. Sci. Fish., 20(7), 571-575 https://doi.org/10.2331/suisan.20.571
  2. Iitaka Y. (1955): Model experiments on the sardine purse seine operating In Hyuganada-2, Bull. Jap. Soc. Sci. Fish., 21 (1), 6-11
  3. Iitaka Y. (1955): Model experiments on the sardine purse seine operating In Hyuganada-3, Bull. Jap. Soc. Sci. Fish., 21(7), 459-462
  4. Iitaka Y. (1956): Model experiments on the sardine purse seIne operating in Hyuganada-4, Bull. Jap. Soc. Sci. Fish., 22 (7), 389-392 https://doi.org/10.2331/suisan.22.389
  5. Iitaka Y. (1958): Model experiments on the sardine purse seine operating in Hyganada-5, Bull. Jap. Soc. Sci. Fish., 23(9), 511-513 https://doi.org/10.2331/suisan.23.511
  6. Iitaka Y. (1958): Model experiments on the sardine purse seine operating In Hyuganada-6, Bull. Jap. Soc. Sci. Fish., 24(6&7), 407-410 https://doi.org/10.2331/suisan.24.407
  7. Kawakami T. (1964) : The theory of desiging and testing fishing nets in model, Modern fishing gear of the world- II. Fishing News Books. London, 471-481
  8. Kim S. J., Imai T. and H. Kikukawa (1992) : An analysis on the sinking characteristics of weighted netting, Nippon SUlsan gakkaishi, 58 (6),1037-1042 https://doi.org/10.2331/suisan.58.1037
  9. Kim S. J., Imai T. and J. S. Park (1995) :Characteristics on the motion of purse seine-I. The sinking behaviour of model purse seine by different netting material. Bull. Korean Soc. Fish.Tech., 31 (4), 362-371
  10. Kim S. J. and J. S. Park (1995): Characteristics on the motion of purse seine-2, An analysis on the sinking characteristics of model purse seine by different netting material. Bull. Korean Soc. Fish. Tech., 31(4), 372-378
  11. Kim S. J. and J. S. Park (1998) : An analysis of sinking resistance for purse seine, In the case of the model seine with different d/l. Bull. Korean Soc. Fish. Tech., 34 (3), 274-282
  12. Kim S. J. (1999) : Studies on the improvement of the fishing efficiency of purse seine in the sea area of cheju island, The changes of seine volume and tension in the purseline during pursing. Bull. Korean Soc. Fish. Tech., 35 (2) ,93-101
  13. Kim S. J., Choi C. M. and Y. J. Chung(2003) : Studies on the improvement of the productivity of the purse seine fishery, The characteristics on the motion of purse seine in the experimental operation of one boat system. Bull. Korean Soc. Fish. Tech., 39 (2) , 99-111 https://doi.org/10.3796/KSFT.2003.39.2.099
  14. Konagaya T. (1970) : Studies on the design of the purse seine - II, Effect of the mesh and the specific gravity of webbing. Bull. Jap. Soc. Sci. Fish., 37(1), 8-12
  15. Konagaya T. (1971) : Studies on the design of the purse seine. Jour. Fac. Fish. Pre. Univ. Mie, 8 (3), 209-296
  16. Nomura M., Mori K., Tawara Y. and K. Kumura (1987): Study on behaviour of purse seine-4, Large scale model experiment of horse mackerel purse seine. Bull. Tokai Reg. Fish. Res. Lab.,49. 63-80
  17. Park J. S. (1986): A study on the fishing ability of the mackerel purse seine operating and the fishing condition in the sea area of Cheju Island. Bull. Korean Fish. Tech. Soc., 22 (3), 42-46
  18. Park J. S. (1986): Studies on the mackerel purse seine operating in the sea area of Cheju Island-1. Model experiment on the changes of net shape in stagnant water. Bull. Korean Fish. Tech. Soc., 22(2), 7-15
  19. Park J. S., Aoyama T. and M. Suzuki (1986) : Studies on the mackerel purse seine operating in the sea area of Cheju Island-2, Model experiment on the deformation of net in two layer current. Bull. Korean Fish. Tech. Soc., 22(4), 32-40
  20. Park J. S. (1989): Studies on the mackerel purse seine operating in the sea area of Cheju Island-3, Fishing ability ofpurse seiner by classes of boat size. Bull. Korean Fish. Tech. Soc., 25 (2), 61-69
  21. Park J. S. (1991): Studies on the mackerel purse seine operating in the sea area of Cheju Island-4, The characteristics of catch and ability in purse seine Bull. Korean Fish. Tech. Soc., 27 (4), 247-254
  22. Park J. S., Kim S. J. and S. K. Kim (1997) : A study on the behaviour of fish schools in the process of catch of the purse seine fishing method, Bull. Korean Soc. Fish. Tech., 33(3),173-182
  23. Park J. S., Kikukawa H. and S. J. Kim (1999) : A Study on the tension of a purseline in the process of catch of the purse seine fishing' method- I, Model experiment on the tension of a purseline by net shapes. Bull. Korean Fish. Tech. Soc., 35 (l), 1-10

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