대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제47권3호
  • /
  • Pages.369-376
  • /
  • 2010
  • /
  • 1225-1143(pISSN)
  • /
  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
권호 표지
DOI QR코드

DOI QR Code

밀도가 상이한 두 유체층에서 부유체 동유체력 특성의 수치적 해석

Numerical Analysis of Hydrodynamic Forces on a Floating Body in Two-layer Fluids

  • 김미근 (울산대학교 조선해양공학부) ;
  • 구원철 (울산대학교 조선해양공학부)
  • Kim, Mi-Geun (School of Naval Architecture and Ocean Engineering University of Ulsan) ;
  • Koo, Weon-Cheol (School of Naval Architecture and Ocean Engineering University of Ulsan)
  • 투고 : 2010.02.22
  • 심사 : 2010.04.26
  • 발행 : 2010.06.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, a radiation and a diffraction problems of a floating body in two-layer fluids were solved by the Numerical Wave Tank(NWT) technique in the frequency domain. In two-layer fluids, two different wave modes exist and the hydrodynamic coefficients can be obtained separately for each mode. The two-domain Boundary Element Method(BEM) in the potential fluid using the whole-domain matrix scheme was used to investigate the characteristics of wave forces, added mass and damping coefficients. The effects of the ratio of density and water depth in the lower domain were also evaluated and compared with given references.

키워드

참고문헌

  1. Gargett, A.E., 1976, "Generation of InternalWaves in Strait of Georgia, British Columbia",Deep Sea Research, Vol. 23, pp. 17-32.
  2. Kashiwagi, M., Ten, I. and Yasunaga, M., 2006,"Hydrodynamics of a Body Floating in a TwolayerFluid of Finite Depth. Part 2. DiffractionProblem and Wave-induced Motions", Journalof Marine Science and Technology, Vol. 11,pp. 150-164. https://doi.org/10.1007/s00773-005-0212-3
  3. Kim, H.R., Ahn, S. and Kim, K., 2001, "Observationsof Highly Nonlinear Internal SolitonsGenerated by Near-inertial Internal Waves offthe East Coast of Korea", Geophys. Res. Lett,Vol. 28(16), pp. 3191-3194. https://doi.org/10.1029/2001GL013130
  4. Koo, W.C. and Kim, M.G., 2009, "NumericalAnalysis of Internal Waves in Two-layer Fluidsby a Two-domain Boundary Element Method",Journal of Ocean Engineering and Technology,Vol. 23(4), pp. 6-11.
  5. Lacombe, H. and Richez, C., 1982, "The Regimeof the Strait of Gibraltar", Hydrodynamics ofSemi-enclosed Seas, pp. 13-73, Elsevier.
  6. Linton, C.M. and McIver, M., 1995, "The Interactionof Waves with Horizontal Cylinders in Two-layer Fluids", Journal of Fluid Mechanics,Vol. 304, pp. 213-229. https://doi.org/10.1017/S002211209500440X
  7. Liu, A.K., Chang Y.S., Hsu, M.K. and Liang,N.K., 1998, "Evolution of Nonlinear InternalWaves in the East and South China Seas",Journal of Geophysical Research, Vol. 103(C4),pp. 7995-8008. https://doi.org/10.1029/97JC01918
  8. Osborne, A.R. and Burch, T.L., 1980, "InternalSolitons in Adaman Sea", Science, Vol. 208,pp. 451-460. https://doi.org/10.1126/science.208.4443.451
  9. Osborne, A.R., Burch, T.L. and Scarlet, R.I.,1978, "The Influence of Internal Waves onDeep-Water Drilling", Journal of PetroleumTechnology, Vol. 30(10), pp. 1497-1504. https://doi.org/10.2118/6913-PA
  10. Ten, I. and Kashiwagi, M., 2004, "Hydrodynamicsof a Body Floating in a Two-layerFluid of Finite Depth. Part 1. Radiation Problem",Journal of Marine Science and Technology, Vol.9, pp. 127-141. https://doi.org/10.1007/s00773-004-0185-7
  11. Yeung, R.W. and Nguyen, T., 1999, "Radiationand Diffraction of Waves in a Two-layer Fluid",Proc. 22nd symposium of Naval Hydrodynamics,Washington, DC, pp. 875-891.
  12. Ziegenbein, J., 1969, "Short Internal Waves inthe Strait of Gibraltar", Deep Sea Research,Vol. 16, pp. 479-487.

피인용 문헌

  1. Formation of Coherent Vortices in Late Wake Downstream of an Object in Weakly Stratified Fluid vol.48, pp.5, 2011, https://doi.org/10.3744/SNAK.2011.48.5.414