URANS and ACM for determining the aerodynamic performance of vertical-axis wind turbine

Rogowski, Krzysztof; Hansen, Martin Otto Lavér

doi:10.1051/e3sconf/201910000069

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…Algorithms used in this work to solve governing equations were presented in previous work [61,62]. Transient calculations were performed using the sliding mesh technique available in ANSYS Fluent, Release 17.1 CFD code.…”

Section: Numerical Settingsmentioning

confidence: 99%

Performance Analysis of a H-Darrieus Wind Turbine for a Series of 4-Digit NACA Airfoils

2020

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The purpose of this paper is to estimate the H-Darrieus wind turbine aerodynamic performance, aerodynamic blade loads, and velocity profiles downstream behind the rotor. The wind turbine model is based on the rotor designed by McDonnell Aircraft Company. The model proposed here consists of three fixed straight blades; in the future, this model is planned to be developed with controlled blades. The study was conducted using the unsteady Reynolds averaged Navier–Stokes (URANS) approach with the k-ω shear stress transport (SST) turbulence model. The numerical two-dimensional model was verified using two other independent aerodynamic approaches: a vortex model and the extended version of the computational fluid dynamics (CFD) code FLOWer. All utilized numerical codes gave similar result of the instantaneous aerodynamic blade loads. In addition, steady-state calculations for the applied airfoils were also made using the same numerical model as for the vertical axis wind turbine (VAWT) to obtain lift and drag coefficients. The obtained values of lift and drag force coefficients, for a Reynolds number of 2.9 million, agree with the predictions of the experiment and XFOIL over a wide range of angle of attack. A maximum rotor power coefficient of 0.5 is obtained, which makes this impeller attractive from the point of view of further research. Research has shown that, if this rotor were to work with fixed blades, it is recommended to use the NACA 1418 airfoil instead of the original NACA 0018.

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Section: Numerical Settingsmentioning

confidence: 99%

Performance Analysis of a H-Darrieus Wind Turbine for a Series of 4-Digit NACA Airfoils

2020

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“…In these investigations, transient analyzes of the operating VAWT were performed, therefore, the Unsteady Reynolds Averaged is approximately 0.2, the pressure-based solver was utilized in this work. Previous works (Rogowski et al, 2018 or Rogowski andHansen, 2019) have shown that the segregated algorithm available under the pressure-based solver provides a sufficiently accurate solution of aerodynamic characteristics of a VAWT, which is why it was also adopted in this work. This algorithm solves the governing transport equations sequentially, segregated from one another, moreover, the memory requirement for this algorithm is less than other algorithms.…”

Section: Numerical Settingsmentioning

confidence: 99%

“…The pressure-based solver also offers the possibility of choosing different velocity-pressure coupling methods and different discretization schemes. Following our own insights (Rogowski, 2018;Rogowski et al, 2018 or Rogowski andHansen, 2019) and recommendations of ANSYS Documentation (ANSYS, Inc.…”

Section: Numerical Settingsmentioning

confidence: 99%

Performance analysis of a Darrieus-type wind turbine for a series of 4-digit NACA airfoils

Rogowski

Hansen

Bangga

2019

Preprint

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Abstract. The purpose of this paper is to estimate the H-Darrieus wind turbine aerodynamic performance, aerodynamic blade loads and velocity profiles downstream behind the rotor. The wind turbine model is based on the rotor designed by McDonnell Aircraft Company. The model proposed here consists of three fixed straight blades; in the future this model is planned to be develop with controlled blades. The study was conducted using the unsteady Reynolds averaged Navier-Stokes (URANS) approach with the k-ω shear stress transport (SST) turbulence model. The numerical two-dimensional model was verified using two other independent aerodynamic approaches: the vortex model developed in Technical University of Denmark (DTU) and the extended version of the CFD code FLOWer at the University of Stuttgart (USTUTT). All utilized numerical codes gave similar result of the instantaneous aerodynamic blade loads. In addition, steady-state calculations for the applied airfoils were also made using the same numerical model as for the vertical axis wind turbine (VAWT) to obtain lift and drag coefficients. The obtained values of lift and drag force coefficients, for a Reynolds number of 2.9 million, agree with the predictions of the experiment and XFoil over a wide range of angle of attack. The maximum rotor power coefficients are obtained at 0.5, which makes this impeller attractive from the point of view of further research. This work also addresses the issue of determining the aerodynamic performance of the rotor with various 4-digit NACA airfoils. The effect of two airfoil parameters, maximum airfoil thickness and maximum camber, on aerodynamic rotor performance is investigated. Research has shown that if this rotor were to work with fixed blades it is recommended to use the NACA 1418 airfoil instead of the original NACA 0018.

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URANS and ACM for determining the aerodynamic performance of vertical-axis wind turbine

Cited by 2 publications

References 11 publications

Performance Analysis of a H-Darrieus Wind Turbine for a Series of 4-Digit NACA Airfoils

Performance Analysis of a H-Darrieus Wind Turbine for a Series of 4-Digit NACA Airfoils

Performance analysis of a Darrieus-type wind turbine for a series of 4-digit NACA airfoils

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