DOI QR코드

DOI QR Code

Hydrodynamics of submersible aquaculture cage system using numerical model

  • Kim, Tae-Ho (Faculty of Marine Technology, Chonnam National University) ;
  • Fredriksson, David W. (Department of Naval Architecture and Ocean Engineering, United States Naval Academy) ;
  • Decew, Judson (Department of Mechanical Engineering, University of New Hampshire)
  • Published : 2008.02.29

Abstract

A numerical model analysis was performed to analyze the motion and mooring tension response of submersible fish cage systems in irregular waves and currents. Two systems were examined: a submersible cage mooring with a single, high tension mooring and the same system, but with an additional three point mooring. Using a Morison equation type model, simulations of the systems were conducted with the cage at the surface and submerged. Irregular waves(JONSWAP spectrum) with and without a co-linear current with a magnitude of 0.5m/s were simulated into the model as input parameters. Surge, heave and pitch dynamic calculations were made, along with tension responses in the mooring lines. Results were analyzed in both the time and frequency domains and linear transfer functions were calculated.

Keywords

Motion;Mooring tension;Submersible cage system;Irregular waves

References

  1. DeCew, J., D.W. Fredriksson, L. Bougrov, M.R. Swift, O. Eroshkin and B. Celikkol, 2005. Numerical and physical modeling of a modified gravity type cage and mooring system. IEEE J. Oceanic Eng., 30(1), 47-58 https://doi.org/10.1109/JOE.2004.841400
  2. Fredriksson, D.W., M.R. Swift, J.D. Irish, I. Tsukrov and B. Celikkol, 2003a. Fish cage and mooring system dynamics using physical and numerical models with field measurements. Aqua. Eng., 27(2), 117-270 https://doi.org/10.1016/S0144-8609(02)00043-2
  3. Fredriksson, D.W., M.R. Swift, J.D. Irish and B. Celikkol, 2003b. The heave response of a central spar fish cage. Transactions of the ASME, J. of Off. Mech. and Arct. Eng., 25, 242- 248 https://doi.org/10.1115/1.1600471
  4. Fredriksson, D.W., M.J. Palczynski, M.R. Swift and J.D. Irish, 2003c. Fluid dynamic drag of a central spar cage open ocean aquaculture IV. June 17-20, St. Andrews, NB, Canada, Mississippi-Alabama Sea Grant Consortium, Ocean Springs, MS. MASGP-01- 006, 2001. 151-168
  5. Fredriksson, D.W., I. Tsukrov, K. Baldwin, M.R. Swift and B. Celikkol, 2003d. Open ocean fish cage and mooring system modeling. Fisheries Dynamics 2003. National Fisheries Research and Development Institute. Busan. Korea, 109-122
  6. Fredriksson, D.W., M.R. Swift, O. Eroshkin, I. Tsukrov, J.D. Irish, and B. Celikkol, 2005. Moored fish cage dynamics in waves and currents. Special Issue on Open Ocean Aquaculture Engineering. IEEE J. Oceanic Eng., 30(1), 28-36 https://doi.org/10.1109/JOE.2004.841412
  7. Goda, Y., 2000. Random seas and the design of maritime structures. World Scientific Publishing Company, New Jersey, pp. 443
  8. Haritos, N and D. T. He., 1992. Modelling the response of cable elements in an ocean environment. Fin. Elem. in Analysis and Des., 19, 19-32 https://doi.org/10.1016/0168-874X(92)90026-9
  9. Hasselmann, K., 1973. Measurements of wind-wave growth and swell decay during the Joint North Sea Wave Project(JONSWAP). Deutsche Hydrographische Zeitschrift, Reihe. 12. pp. 95
  10. Kim, T.H., 2006. Mooring loads analysis of submersible aquaculture cage system using finite element method. J. Kor. Fish. Tech., 42(1), 44-53 https://doi.org/10.3796/KSFT.2006.42.1.044
  11. Morison, J.R., J.W. Johnson, M.P. O Brien and S.A. Schaaf, 1950. The forces exerted by surface waves on piles. Petroleum Transactions, American Inst. of Mining Eng., 149-157
  12. Ochi, M.K., 1998. Ocean waves: The Stochastic approach. Cambridge University Press, New York. pp. 331
  13. Shore Protection Manual, 1984. US Army engineer waterways experiment station. 4th ed., 2 Vols. Coastal Engineering Research Center, US Government Printing Office, Washington, DC. pp. 432
  14. Tsukrov, I., O. Eroshkin, D.W. Fredriksson, M.R. Swift, and B. Celikkol, 2003. Finite element modeling of net panels using consistent net elements. Ocean Eng., 30, 251-270 https://doi.org/10.1016/S0029-8018(02)00021-5
  15. Tsukrov, I, O. Eroshkin, W. Paul and B. Celikkol, 2005. Numerical modeling of nonlinear elastic components of mooring systems. IEEE J. Oceanic Eng., 30(1), 37-46 https://doi.org/10.1109/JOE.2004.841396