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

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

Research output: Contribution to conferencePaper

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.

Conference

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

Fingerprint

Offshore wind turbines
Time domain analysis
Impulse response
Convolution
Dynamic response
Time series
Kinematics
Hydrodynamics

Keywords

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

Cite this

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
Lin, Zi ; Tao, Longbin ; Sayer, P. ; Ning, Dezhi. / 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.6 p.
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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.",
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author = "Zi Lin and Longbin Tao and P. Sayer and Dezhi Ning",
year = "2016",
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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, 19/06/16 - 24/06/16, . https://doi.org/10.1115/OMAE2016-54113

Time-domain analysis of substructure of a floating offshore wind turbine in waves. / Lin, Zi; Tao, Longbin; Sayer, P.; Ning, Dezhi.

2016. Paper presented at 35th International Conference on Ocean, Offshore and Arctic Engineering, Busan, Korea, Republic of.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Time-domain analysis of substructure of a floating offshore wind turbine in waves

AU - Lin, Zi

AU - Tao, Longbin

AU - Sayer, P.

AU - Ning, Dezhi

PY - 2016/6/19

Y1 - 2016/6/19

N2 - 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.

AB - 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.

KW - floating offshore wind turbine

KW - random waves

KW - time domain method

UR - https://www.asme.org/events/omae

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DO - 10.1115/OMAE2016-54113

M3 - Paper

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