Numerical Simulation of the Aerodynamics of Horizontal Axis Wind Turbines Under Yawed Flow Conditions

Tongchitpakdee, Chanin; Benjanirat, Sarun; Sankar, Lakshmi N.

doi:10.2514/6.2005-773

Cited by 23 publications

(17 citation statements)

References 4 publications

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“…Despite the limitations for industrial design, a growing number of Navier-Stokes solvers have appeared in the literature in the past decade as available computational power has increased. [2][3][4][5] Such solvers may be effective in the future, but more efficient methods are needed in the near term.…”

Section: Introductionmentioning

confidence: 99%

Wind Turbine Dynamic Stall Analysis Using Harmonic Balance and Correlation-based Transition Models

Howison

Ekici

2013

21st AIAA Computational Fluid Dynamics Conference

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In this paper, we use the harmonic balance method to study an oscillating S809 airfoil in dynamic stall. The periodic behavior of this problem makes it well suited for the harmonic balance method, which is able to model unsteady aerodynamics at greatly reduced computational costs when compared with time-accurate unsteady-flow solvers. A finite-volume technique based on the lower-upper symmetric Gauss-Seidel scheme with Roe fluxes is used to solve the Reynolds-averaged Navier-Stokes equations. The turbulent viscosity is computed with the one-equation Spalart-Allmaras turbulence model. In addition, the laminar-turbulent transition is modeled using a correlation-based approach originally developed by Langtry and Menter. Comparisons with experimental data for steady flows with the S809 airfoil highlight the necessity of the transition model to accurately predict the onset of static stall. For unsteady cases, the transition model provides improved agreement with experimental data, predicting dynamic stall when the fully turbulent model cannot.

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Section: Introductionmentioning

confidence: 99%

Wind Turbine Dynamic Stall Analysis Using Harmonic Balance and Correlation-based Transition Models

Howison

Ekici

2013

21st AIAA Computational Fluid Dynamics Conference

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“…As mentioned before, excellent experimental data is available for this rotor and it has been widely used for validation of various theoretical models. The calculation results have also been compared with the CFD prediction results in Tongchitpakdee et al [29]. Since the flow over a rotor in yaw is inherently unsteady, the aerodynamic loads fluctuate at time average values.…”

Section: Validationmentioning

confidence: 99%

“…In Ref. [29], the authors compared time averaged data with the experimental data. Likewise comparisons are also presented with only the time averaged data in the current work.…”

Section: Validationmentioning

confidence: 99%

Wind turbine aerodynamics and loads control in wind shear flow

Shen

Zhu

2011

Energy

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“…Steady solutions remain practical, but time‐accurate unsteady solutions are still prohibitively costly. Despite the limitations for industrial design, a growing number of Navier–Stokes solvers have appeared in the literature in the past decade as available computational power has increased . Such solvers may be effective in the future, but more efficient methods are needed in the near term.…”

Section: Introductionmentioning

confidence: 99%

Dynamic stall analysis using harmonic balance and correlation-basedγ- Reθt¯ transition models for wind turbine applications

Howison

Ekici

2014

Wind Energ.

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In this paper, we use the harmonic balance method to study an oscillating S809 airfoil in dynamic stall. The periodic behavior of this problem makes it well suited for the harmonic balance method, which is able to model unsteady aerodynamics at greatly reduced computational costs when compared with time‐accurate unsteady‐flow solvers. A finite‐volume technique based on the lower–upper symmetric Gauss–Seidel scheme with Roe fluxes is used to solve the Reynolds‐averaged Navier–Stokes equations. The turbulent viscosity is computed with the one‐equation Spalart–Allmaras turbulence model. In addition, the laminar–turbulent transition is modeled using a correlation‐based approach originally developed by Langtry and Menter. Comparisons with experimental data for steady flows with the S809 airfoil highlight the necessity of the transition model to accurately predict the onset of static stall. For unsteady cases, the transition model provides improved agreement with experimental data, predicting dynamic stall when the fully turbulent model cannot. Copyright © 2014 John Wiley & Sons, Ltd.

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Numerical Simulation of the Aerodynamics of Horizontal Axis Wind Turbines Under Yawed Flow Conditions

Cited by 23 publications

References 4 publications

Wind Turbine Dynamic Stall Analysis Using Harmonic Balance and Correlation-based Transition Models

Wind Turbine Dynamic Stall Analysis Using Harmonic Balance and Correlation-based Transition Models

Wind turbine aerodynamics and loads control in wind shear flow

Dynamic stall analysis using harmonic balance and correlation-basedγ- Reθt¯ transition models for wind turbine applications

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