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Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

Published

Standard

Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics. / Campobasso, Michele Sergio; Sanvito, Andrea Giuseppe; Drofelnik, Jernej; Jackson, Adrian; Zhou, Yang; Xiao, Qung; Croce, Alessandro.

ASME 2018 1st International Offshore Wind Technical Conference: 4-7 November 2018, San Francisco, California, USA. The American Society of Mechanical Engineers, 2018. IOWTC2018-1059.

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

Harvard

Campobasso, MS, Sanvito, AG, Drofelnik, J, Jackson, A, Zhou, Y, Xiao, Q & Croce, A 2018, Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics. in ASME 2018 1st International Offshore Wind Technical Conference: 4-7 November 2018, San Francisco, California, USA., IOWTC2018-1059, The American Society of Mechanical Engineers, ASME 2018 1st International Offshore Wind Technical Conference, San Francicso, United States, 4/11/18. https://doi.org/10.1115/IOWTC2018-1059

APA

Campobasso, M. S., Sanvito, A. G., Drofelnik, J., Jackson, A., Zhou, Y., Xiao, Q., & Croce, A. (2018). Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics. In ASME 2018 1st International Offshore Wind Technical Conference: 4-7 November 2018, San Francisco, California, USA [IOWTC2018-1059] The American Society of Mechanical Engineers. https://doi.org/10.1115/IOWTC2018-1059

Vancouver

Campobasso MS, Sanvito AG, Drofelnik J, Jackson A, Zhou Y, Xiao Q et al. Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics. In ASME 2018 1st International Offshore Wind Technical Conference: 4-7 November 2018, San Francisco, California, USA. The American Society of Mechanical Engineers. 2018. IOWTC2018-1059 https://doi.org/10.1115/IOWTC2018-1059

Author

Campobasso, Michele Sergio ; Sanvito, Andrea Giuseppe ; Drofelnik, Jernej ; Jackson, Adrian ; Zhou, Yang ; Xiao, Qung ; Croce, Alessandro. / Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics. ASME 2018 1st International Offshore Wind Technical Conference: 4-7 November 2018, San Francisco, California, USA. The American Society of Mechanical Engineers, 2018.

Bibtex

@inproceedings{06163baab45046c2975fa067f130b641,
title = "Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics",
abstract = "The unsteady aerodynamics of floating offshore wind turbine rotors is more complex than that of fixed-bottom turbine rotors, due to additional rigid-body motion components enabled by the lack of rigid foundations; it is still unclear if low-fidelity aerodynamic models, such as the blade element momentum theory, provide sufficiently reliable input for floating turbine design requiring load data for a wide range of operating conditions. High-fidelity Navies-Stokes CFD has the potential to improve the understanding of FOWT rotor aerodynamics, and support the improvement of lower-fidelity aerodynamic analysis models. To accomplish these aims, this study uses an in-house compressible Navier-Stokes code and the NREL FAST engineering code to analyze the unsteady flow regime of the NREL 5 MW rotor pitching with amplitude of 4 degrees and frequency of 0.2 Hz, and compares all results to those obtained with a commercial incompressible code and FAST in a previous independent study. The level of agreement of CFD and engineering analyses in each of these two studies is found to be quantitatively similar, but the peak rotor power of the compressible flow analysis is about 20 % higher than that of the incompressible analysis. This is possibly due to compressibility effects, as the instantaneous local Mach number is found to be higher than 0.4. Validation of the compressible flow analysis set-up, using an absolute frame formulation and low-speed preconditioning, is based on the analysis of the steady and yawed flow past the NREL Phase VI rotor.",
keywords = "floating wind turbine aerodynamics, Navier-Stokes Computational Fluid Dynamics, utility-scale wind turbine design",
author = "Campobasso, {Michele Sergio} and Sanvito, {Andrea Giuseppe} and Jernej Drofelnik and Adrian Jackson and Yang Zhou and Qung Xiao and Alessandro Croce",
year = "2018",
month = nov
day = "4",
doi = "10.1115/IOWTC2018-1059",
language = "English",
isbn = "9780791851975",
booktitle = "ASME 2018 1st International Offshore Wind Technical Conference",
publisher = "The American Society of Mechanical Engineers",
note = "ASME 2018 1st International Offshore Wind Technical Conference ; Conference date: 04-11-2018 Through 07-11-2018",

}

RIS

TY - GEN

T1 - Compressible Navier-Stokes Analysis of Floating Wind Turbine Rotor Aerodynamics

AU - Campobasso, Michele Sergio

AU - Sanvito, Andrea Giuseppe

AU - Drofelnik, Jernej

AU - Jackson, Adrian

AU - Zhou, Yang

AU - Xiao, Qung

AU - Croce, Alessandro

PY - 2018/11/4

Y1 - 2018/11/4

N2 - The unsteady aerodynamics of floating offshore wind turbine rotors is more complex than that of fixed-bottom turbine rotors, due to additional rigid-body motion components enabled by the lack of rigid foundations; it is still unclear if low-fidelity aerodynamic models, such as the blade element momentum theory, provide sufficiently reliable input for floating turbine design requiring load data for a wide range of operating conditions. High-fidelity Navies-Stokes CFD has the potential to improve the understanding of FOWT rotor aerodynamics, and support the improvement of lower-fidelity aerodynamic analysis models. To accomplish these aims, this study uses an in-house compressible Navier-Stokes code and the NREL FAST engineering code to analyze the unsteady flow regime of the NREL 5 MW rotor pitching with amplitude of 4 degrees and frequency of 0.2 Hz, and compares all results to those obtained with a commercial incompressible code and FAST in a previous independent study. The level of agreement of CFD and engineering analyses in each of these two studies is found to be quantitatively similar, but the peak rotor power of the compressible flow analysis is about 20 % higher than that of the incompressible analysis. This is possibly due to compressibility effects, as the instantaneous local Mach number is found to be higher than 0.4. Validation of the compressible flow analysis set-up, using an absolute frame formulation and low-speed preconditioning, is based on the analysis of the steady and yawed flow past the NREL Phase VI rotor.

AB - The unsteady aerodynamics of floating offshore wind turbine rotors is more complex than that of fixed-bottom turbine rotors, due to additional rigid-body motion components enabled by the lack of rigid foundations; it is still unclear if low-fidelity aerodynamic models, such as the blade element momentum theory, provide sufficiently reliable input for floating turbine design requiring load data for a wide range of operating conditions. High-fidelity Navies-Stokes CFD has the potential to improve the understanding of FOWT rotor aerodynamics, and support the improvement of lower-fidelity aerodynamic analysis models. To accomplish these aims, this study uses an in-house compressible Navier-Stokes code and the NREL FAST engineering code to analyze the unsteady flow regime of the NREL 5 MW rotor pitching with amplitude of 4 degrees and frequency of 0.2 Hz, and compares all results to those obtained with a commercial incompressible code and FAST in a previous independent study. The level of agreement of CFD and engineering analyses in each of these two studies is found to be quantitatively similar, but the peak rotor power of the compressible flow analysis is about 20 % higher than that of the incompressible analysis. This is possibly due to compressibility effects, as the instantaneous local Mach number is found to be higher than 0.4. Validation of the compressible flow analysis set-up, using an absolute frame formulation and low-speed preconditioning, is based on the analysis of the steady and yawed flow past the NREL Phase VI rotor.

KW - floating wind turbine aerodynamics, Navier-Stokes Computational Fluid Dynamics, utility-scale wind turbine design

U2 - 10.1115/IOWTC2018-1059

DO - 10.1115/IOWTC2018-1059

M3 - Conference contribution/Paper

SN - 9780791851975

BT - ASME 2018 1st International Offshore Wind Technical Conference

PB - The American Society of Mechanical Engineers

T2 - ASME 2018 1st International Offshore Wind Technical Conference

Y2 - 4 November 2018 through 7 November 2018

ER -