Time-domain analysis of substructure of a floating offshore wind turbine in waves

Zi Lin, Longbin Tao, P. Sayer, Dezhi Ning

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Abstract

This paper aims to analyze the dynamic response of a floating offshore wind turbine (FOWT) in waves. Instead of modeling the incident random wave by the traditional wave spectrum and superposition theory, an impulse response function method was used to simulate the incident wave. The incident wave kinematics were evaluated by a convolution of the wave elevation at the original point and the impulse response function in the domain. To check the validity of current wave simulation method, the calculated incident wave velocities were compared with analytical solutions; they showed good agreement. The developed method was then used for the hydrodynamic analysis of the substructure of the FOWT. A direct time-domain method was used to calculate the wave-rigid body interaction problem. The proposed numerical scheme offers an effective way of modeling the incident wave by an arbitrary time series.
Original languageEnglish
Number of pages6
DOIs
Publication statusPublished - 19 Jun 2016
Event35th International Conference on Ocean, Offshore and Arctic Engineering - Busan, Korea, Republic of
Duration: 19 Jun 201624 Jun 2016

Conference

Conference35th International Conference on Ocean, Offshore and Arctic Engineering
Abbreviated titleOMAE2016
CountryKorea, Republic of
CityBusan
Period19/06/1624/06/16

Keywords

  • floating offshore wind turbine
  • random waves
  • time domain method

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    Lin, Z., Tao, L., Sayer, P., & Ning, D. (2016). Time-domain analysis of substructure of a floating offshore wind turbine in waves. Paper presented at 35th International Conference on Ocean, Offshore and Arctic Engineering, Busan, Korea, Republic of. https://doi.org/10.1115/OMAE2016-54113