Journal of Korean Society of Coastal and Ocean Engineers (한국해안해양공학회지)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Dynamic Analysis of Riser with Vortex Excitation by Coupled Wake Oscillator Model

연계 후류진동 모델 적용을 통한 와류방출 가진에 의한 라이저의 동적해석

  • 홍남식 (동아대학교 토목해양공학부) ;
  • 허택녕 (창원대학교 토목공학과)
  • Published : 2000.09.01
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Abstract

Numerical model is proposed to estimate dynamic responses of riser with vortex excitation by inline current. Galerkin's finite decomposition method is implemented for the development of a numerical model and vortex excitation is modeled by coupled wake oscillator proposed by Blevins. The numerical results are inspected through the physical interpretation to give the verification and usefulness of the suggested numerical model.

면내 조류흐름에 의해 발생하는 와류방출 가진으로 인한 라이저의 동적거동해석을 위한 수치해석 모델을 개발한다. 수치해석 모델개발을 위해 Galerkin의 유한요소 근사화법을 적용하였으며 와류방출 가진은 Blevins에 의해 제안된 연계 후류진동 모델을 사용하였다. 와류방출로 인한 라이저의 일반적인 거동특성을 수치해석 결과와 비교분석함으로써 모델의 유용성을 검증하였다.

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References

  1. Flow Induced Vibration Blevins, R.D.
  2. Proc. Offishore Technology Conference, OTC 6893 A marine riser with internal flow-induced vibration Chen, B.C.M.
  3. J. Energy Resources Tech. v.104 no.4 Hydrodynamic loads on flexible marine structures due to vortex shedding Every, M.J.;King, R.;Griffin, O.M.
  4. The measurements of vortex-induced effects in flow past stationary and oscillating circular and D-section cylinders Feng, C.C.
  5. J. Korean Soc. Coastal and Ocean Engrs. v.7 no.1 The effect of internal flow on marine riser dynamics Hong, N.S.
  6. J. Korean Soc. Coastal and Ocean Engrs. v.8 no.4 Free vibration of marine riser systen with the inclusion of internal flow Hong, N.S.
  7. J. Appl. Mech. v.96 A model for vortex-induced oscillations of structure Iwan, W.D.;Blevins, R.D.
  8. J. Energy Resources Tech. v.109 On the vortex-induced oscillations of long structural elements Iwan, W.D.;Jones, N.P.
  9. J. Appl. Mech. v.96 no.3 On computation of the motion of elastic rods Nordgren, R.P.
  10. J. Fluids Engrg. v.96 no.4 Vortex formation in the wake of a vibrating flexible cable Ramberg, S.E.;Griffin, O.M.
  11. Transverse oscillations of a circular cylinder in uniform flow Sarpkaya, T.