CFD and Aeroelastic Analysis of the MEXICO Wind Turbine

Carrion, Marina; Woodgate, M.; Steijl, R.; Barakos, George N.; Gómez-Iradi, S.; Munduate, Xabier

doi:10.1088/1742-6596/555/1/012006

“…Slight differences in predicting pressure distribution are seen between the experiment and the CFD simulations at the 25% and 35% blade span sections. However, they are due to instability in the pressure transducers during the experiment as discussed in [33][34]. Overall, the present simulation results are very close to those of Sorensen et al [34] and they are in good agreement with the experiment.…”

Section: Resultssupporting

confidence: 90%

“…The MEXICO Experiment was conducted in a wind tunnel in the Large-Scale Low-Speed Facility of the German-Dutch Wind Tunnel (DNW) [29][30][31][32]. Numerical simulations have also been carried out for this wind turbine [33][34][35][36][37]. The selected parameters of this wind turbine which are used in the present simulations are listed in Table 1, and further details can be found in the authors' previous papers [27][28].…”

Section: The Mexico-experiments Wind Turbinementioning

confidence: 99%

Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

Naung

¹

,

Rahmati

²

,

Farokhi

³

2021

Journal of Engineering for Gas Turbines and Power

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The high-fidelity computational fluid dynamics (CFD) simulations of a complete wind turbine model usually require significant computational resources. It will require much more resources if the fluid-structure interactions between the blade and the flow are considered, and it has been the major challenge in the industry. The aeromechanical analysis of a complete wind turbine model using a high-fidelity CFD method is discussed in this paper. The distinctiveness of this paper is the application of the nonlinear frequency domain solution method to analyse the forced response and flutter instability of the blade as well as to investigate the unsteady flow field across the wind turbine rotor and the tower. This method also enables the aeromechanical simulations of wind turbines for various inter blade phase angles in a combination with a phase shift solution method. Extensive validations of the nonlinear frequency domain solution method against the conventional time domain solution method reveal that the proposed frequency domain solution method can reduce the computational cost by one to two orders of magnitude.

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“…The experimental results (especially those corresponding to the axial velocity component; Figure 9a) also show that the vortex sheet located along the blade span is a bit bended towards the downstream direction, which confirms the blade deflection. Carrión et al [54] performed a fluid-structure interaction study of the MEXICO turbine and estimated that the blade tip deflection was approximately 5 cm for U ∞ = 15 m/s. For U ∞ = 24 m/s, it should be even more.…”

Section: Flow Field In the Wake After The Blade Passagementioning

confidence: 99%

Insight into Rotational Effects on a Wind Turbine Blade Using Navier–Stokes Computations

Herráez

¹

,

Stoevesandt²,

Peinke

³

2014

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Rotational effects are known to influence severely the aerodynamic performance of the inboard region of rotor blades. The underlying physical mechanisms are however far from being well understood. The present work addresses this problem using Reynolds averaged Navier-Stokes computations and experimental results of the MEXICO (Model Experiments in Controlled Conditions) rotor. Four axisymmetric inflow cases with wind speeds ranging from pre-stall to post-stall conditions are computed and compared with pressure and particle image velocimetry (PIV) experimental data, obtaining, in general, consistent results. At low angles of attack, the aerodynamic behavior of all of the studied blade sections resembles the one from the corresponding 2D airfoils. However, at high angles of attack, rotational effects lead to stall delay and/or lift enhancement at inboard positions. Such effects are shown to occur only in the presence of significant radial flows. Interestingly, the way in which rotational effects influence the aerodynamics of the MEXICO blades differs qualitatively in certain aspects from the descriptions found in the literature about this topic. The presented results provide new insights that are useful for the development of advanced and physically-sound correction models.

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“…The MEXICO Experiment was conducted in a wind tunnel in the Large-Scale Low-Speed Facility of the German-Dutch Wind Tunnel (DNW) [29][30][31][32]. Numerical simulations have also been carried out for this wind turbine [33][34][35][36][37]. The selected parameters of this wind turbine which are used in the present simulations are listed in Table 1, and further details can be found in the authors'…”

Section: The Mexico-experiments Wind Turbinementioning

confidence: 99%

Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

Naung

¹

,

Rahmati

²

,

Farokhi

³

2020

Volume 12: Wind Energy

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The high-fidelity computational fluid dynamics (CFD) simulations of a complete wind turbine model usually require significant computational resources. It will require much more resources if the fluid-structure interactions between the blade and the flow are considered, and it has been the major challenge in the industry. The aeromechanical analysis of a complete wind turbine model using a high-fidelity CFD method is discussed in this paper. The distinctiveness of this paper is the application of the nonlinear frequency domain solution method to analyse the forced response and flutter instability of the blade as well as to investigate the unsteady flow field across the wind turbine rotor and the tower. This method also enables the aeromechanical simulations of wind turbines for various inter blade phase angles in a combination with a phase shift solution method. Extensive validations of the nonlinear frequency domain solution method against the conventional time domain solution method reveal that the proposed frequency domain solution method can reduce the computational cost by one to two orders of magnitude.

show abstract

CFD and Aeroelastic Analysis of the MEXICO Wind Turbine

Cited by 8 publications

References 24 publications

Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

Insight into Rotational Effects on a Wind Turbine Blade Using Navier–Stokes Computations

Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

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