On the characteristics of the wake of a wind turbine undergoing large motions caused by a floating structure: an insight based on experiments and multi-fidelity simulations from the OC6 project Phase III

被引：15

作者：

Cioni, Stefano ^{[1
]}

Papi, Francesco ^{[1
]}

Pagamonci, Leonardo ^{[1
]}

Bianchini, Alessandro ^{[1
]}

Ramos-Garcia, Nestor ^{[2
]}

Pirrung, Georg ^{[2
]}

Corniglion, Remi ^{[3
]}

Lovera, Anais ^{[4
]}

Galvan, Josean ^{[5
]}

Boisard, Ronan ^{[6
]}

Fontanella, Alessandro ^{[7
]}

Schito, Paolo ^{[7
]}

Zasso, Alberto ^{[7
]}

Belloli, Marco ^{[7
]}

Sanvito, Andrea ^{[8
]}

Persico, Giacomo ^{[8
]}

Zhang, Lijun ^{[9
]}

Li, Ye ^{[9
]}

Zhou, Yarong ^{[9
]}

Mancini, Simone ^{[10
]}

Boorsma, Koen ^{[10
]}

Amaral, Ricardo ^{[11
,12
]}

Vire, Axelle ^{[12
]}

Schulz, Christian W. ^{[13
]}

Netzband, Stefan ^{[13
]}

Soto-Valle, Rodrigo ^{[14
]}

Marten, David ^{[15
]}

Martin-San-Roman, Raquel ^{[16
]}

Trubat, Pau ^{[17
]}

Molins, Climent ^{[18
]}

Bergua, Roger ^{[19
]}

Branlard, Emmanuel ^{[19
]}

Jonkman, Jason ^{[19
]}

Robertson, Amy ^{[19
]}

机构：

[1] Univ Florence, Dept Ind Engn, I-50139 Florence, Italy

[2] Tech Univ Denmark, Dept Wind & Energy Syst, DK-2800 Lyngby, Denmark

[3] EDF R&D, F-78400 Chatou, France

[4] EDF R&D, F-91120 Palaiseau, France

[5] Dept Wind Energy, Eureka, Errigoiti 48309, Spain

[6] Aerodynam Dept, Off Natl Etud & Rech Aerosp, F-92190 Paris, France

[7] Dept Mech Engn, Politecn Milano, I-20156 Milan, Italy

[8] Dipartimento Energia, Lab Fluid Machines, Politecn Milano, I-20156 Milan, Italy

[9] Shanghai Jiao Tong Univ, Multifunct Towing Tank Lab, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China

[10] Netherlands Org Appl Sci Res, Wind Energy Dept, NL-1755 LE Petten, Netherlands

[11] Siemens Gamesa Renewable Energy, F-76800 St Etienne Du Rouvray, France

[12] Delft Univ Technol, Fac Aerosp Engn, NL-2629 HS Delft, Netherlands

[13] Hamburg Univ Technol, Inst Fluid Dynam & Ship Theory, D-21073 Hamburg, Germany

[14] Univ La Frontera, Dept Mech Engn, Temuco 4811230, Chile

[15] Tech Univ Berlin, Hermann Fottinger Inst, Chair Fluid Dynam, D-10623 Berlin, Germany

[16] Ctr Nacl Energias Renovables CENER, Wind Energy Dept, Sarriguen 31621, Spain

[17] Univ Politecn Cataluna, Naut Sci & Engn Dept, Barcelona 08003, Spain

[18] Univ Politecn Cataluna, Dept Civil & Environm Engn, Barcelona 08034, Spain

[19] Natl Wind Technol Ctr, Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

WIND ENERGY SCIENCE | 2023年 / 8卷 / 11期

关键词：

AERODYNAMIC RESPONSE; ROTOR; VALIDATION; MODEL;

D O I：

10.5194/wes-8-1659-2023

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study reports the results of the second round of analyses of the Offshore Code Comparison, Collaboration, Continued, with Correlation and unCertainty (OC6) project Phase III. While the first round investigated rotor aerodynamic loading, here, focus is given to the wake behavior of a floating wind turbine under large motion. Wind tunnel experimental data from the UNsteady Aerodynamics for FLOating Wind (UNAFLOW) project are compared with the results of simulations provided by participants with methods and codes of different levels of fidelity. The effect of platform motion on both the near and the far wake is investigated. More specifically, the behavior of tip vortices in the near wake is evaluated through multiple metrics, such as streamwise position, core radius, convection velocity, and circulation. Additionally, the onset of velocity oscillations in the far wake is analyzed because this can have a negative effect on stability and loading of downstream rotors. Results in the near wake for unsteady cases confirm that simulations and experiments tend to diverge from the expected linearized quasi-steady behavior when the rotor reduced frequency increases over 0.5. Additionally, differences across the simulations become significant, suggesting that further efforts are required to tune the currently available methodologies in order to correctly evaluate the aerodynamic response of a floating wind turbine in unsteady conditions. Regarding the far wake, it is seen that, in some conditions, numerical methods overpredict the impact of platform motion on the velocity fluctuations. Moreover, results suggest that the effect of platform motion on the far wake, differently from original expectations about a faster wake recovery in a floating wind turbine, seems to be limited or even oriented to the generation of a wake less prone to dissipation.

引用

页码：1659 / 1691

页数：33

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