JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Analysis of Nonlinear Destructive Interaction between Wind and Wave Loads Acting on the Offshore Wind Energy Converter based on the Hydraulic Model Test
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Analysis of Nonlinear Destructive Interaction between Wind and Wave Loads Acting on the Offshore Wind Energy Converter based on the Hydraulic Model Test
Cho, Yong Jun; Yang, Kee Sok;
  PDF(new window)
 Abstract
In order to quantitatively estimate the nonlinear destructive interaction of wave load with wind load, which is very vital for the optimal design of offshore wind energy converter, we carried out a hydraulic model test and wind tunnel test. As a substructure of offshore wind energy converter, we would deploy the monopile, which is popular due to its easiness in construction. Based on the simulation using Monte Carlo simulation using Kaimal spectrum and cross spectrum, the instantaneous maximum wind velocity is adjusted to 10 m/s. And, considering the wave conditions of the Western Sea where a pilot wind farm is planned to be constructed, , 0.15 m, 0.2 m is carefully chosen. It turns out that the nonlinear destructive interaction between the wind and wave loads acting on the offshore wind energy converter is more clearly visible at rough seas rather than at mild seas, which strongly support our deduction that a Large eddy, a swirling vortex developed near the bumpy water surface in the opposite direction of the wind, is the driving mechanism underlying nonlinear destructive interaction between the wind and wave loads.
 Keywords
nonlinear destructive interaction between wave and wind load;Large eddy;Kaimal spectrum;JONSWAP spectrum;aeroelastic analysis;hydroelastic analysis;
 Language
Korean
 Cited by
 References
1.
Adrian, R.J. (2007). "Hairpin vortex organization in wall turbulence", Phys. Fluids, 19, 041301. crossref(new window)

2.
Adrezin, R., Bar-Avi, P., and Benaroya, H. (1996). "Dynamic response of compliant offshore structures-review", Journal of aerospace engineering, Vol. 9, No. 4.

3.
Banner, and Melville (1976). "On the separation of air flow over water waves", Journal of fluid mechanics, Vol. 77, No. 4.

4.
Cho, Y.J., Kim, B.K., and Yang, K.S. (2015). "Nonlinear destructive interaction between wind and wave loads acting on the offshore wind energy converter", Proceedings of OFFSHORE 2015, Copenhagen, Denmark.

5.
Chopra, A.K. (1995). "Dynamics of structures", Prentice-hall, INC.

6.
Deodatis, G. (1996A). "Simulation of ergodic multi variate stochastic processes", Journal of engineering mechanics.

7.
Deodatis, G. (1996B). "Simulation of stochastic processes and fields to model loading and material uncertainties, Probabilistic methods for structural design", C. G. Soares, ed., Kluwer academic publishers, Boston, Mass.

8.
Frigaard, P. and Andersen, T.L. (2010). "Technical background material for the wave generation software awasys 5", DCE Technical reports No. 64, Aalborg University.

9.
Kaimal, J.C., Wyngaard, J.C., Izumi, Y., and Cote, O.R. (1972). "Spectral characteristics of surface-layer turbulence", J. Royal Meteorological Soc., London, England, 98, 563-589 crossref(new window)

10.
Kim, C.H. (2008). "Nonlinear waves and offshore structures", World scientific.

11.
Manenti, S. and Petrini, F. (2010). "Dynamic analysis of an offshore wind turbine: wind-waves nonlinear interaction", Earth and Space 2010: Engineering, Science, Construction and Operation in Challenging Environments, 2010 (ASCE, 2010).

12.
Morison J.R., O'Brien M.P., Johnson J.W., and Schaaf S.A. (1950). "The force exerted by surface waves on piles", Petrol. Trans. AIME 189.

13.
Sarpkays, T.S. (2010). "Wave forces on offshore structures", Cambridge university press.

14.
Simiu, E. and Scanlan, R. H. (1996). "Wind effects on structures", John Wiley & Sons, INC.