Scale Adaptive Simulation Model for the Darrieus Wind Turbine

Rogowski, Krzysztof; Hansen, Martin Otto Lavér; Maroński, Ryszard; Lichota, Piotr

doi:10.1088/1742-6596/753/2/022050

Cited by 15 publications

(13 citation statements)

References 10 publications

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“…7) could also be caused by the blade passing the wake and the vortex structure from the second blade. Rogowski at al. (2016) presented 2.5D unsteady CFD analysis of a single one-bladed wind turbine operating at a tip speed ratio of 5 employing the scale adaptive simulation (SAS) approach.…”

Section: Aerodynamic Blade Loadsmentioning

confidence: 99%

2-D CFD Computations of the Two-Bladed Darrieus-Type Wind Turbine

Rogowski

Hansen

Lichota

2018

JAFM

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In spite of the attractiveness of CFD methods and advanced measurement methods, there is still no full analysis of aerodynamic blade loads for vertical axis Darrieus-type wind turbines. Due to an inherently unsteady flow around the rotor blades, blade-wake-blade interaction and the occurrence of dynamic stall, the aerodynamics of this type of wind turbine is very complex. A two-bladed rotor have been investigated numerically for the tip speed ratio of 5.0. This paper compares results for aerodynamic blade loads obtained applying such turbulence models as: the standard k-ε; the RNG k-ε; the Realizable k-ε and the SST k-ω. As a result, quantitative instantaneous blade forces as well as instantaneous wake profiles behind the rotor have been obtained. Aerodynamic wake behind the rotor is also visualized by using streak lines. All CFD results are compared with experimental data taken from literature. Good agreement between the numerical results and the experiment is shown for the aerodynamic blade loads as well as for aerodynamic wake behind the rotor.

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Section: Aerodynamic Blade Loadsmentioning

confidence: 99%

2-D CFD Computations of the Two-Bladed Darrieus-Type Wind Turbine

Rogowski

Hansen

Lichota

2018

JAFM

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“…Firstly, flow field information was obtained through CFD calculation, and the frequency domain distribution of the sound source was obtained through discrete Fourier transform (DFT). Rogowski et al [11] study the scale adaptive simulation (SAS) approach for performance analysis of a one-bladed Darrieus wind turbine working at a tip speed ratio of 5 and at a blade Reynolds number of 40000. The level of agreement between CFD and experimental results is reasonable.…”

Section: Introductionmentioning

confidence: 99%

A Novel Aerodynamic Noise Reduction Method Based on Improving Spanwise Blade Shape for Electric Propeller Aircraft

Wang

et al. 2019

International Journal of Aerospace Engineering

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Aiming at the problem of excessive propeller noise in a new type of electric aircraft, in order to ensure the propeller aerodynamic characteristics simultaneously, a noise reduction method for improving the shape of the blade along the spanwise is proposed. The FW-H model, the unsteady slip mesh, and the large eddy simulation method are investigated to obtain the aerodynamic noise spectrum. Initially, through propeller aerodynamic noise numerical simulation, we obtain the sound pressure and aircraft aerodynamic noise in frequency domain. Subsequently, the effectiveness of our method is verified by comparing the experimental data and numerical results. Based on the established calculation model and method, under three different rotation speeds, the distribution law of the sound pressure level of the propeller with different shapes along the spanwise is analyzed, and the influence of the blade shape on the aerodynamic noise of the propeller is obtained. The research shows that the aerodynamic noise of the new blade compared to the original blade is significantly reduced at the same rotation speed higher than 1000 rpm, indicating that the blade load noise plays a dominant role in the aerodynamic noise and can be effectively reduced by changing the blade shape along the spanwise, thus reducing the aerodynamic noise of the blade.

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“…Both grids were examined in terms of element density. More details on these grids can be found in [12,13].…”

Section: Methodsmentioning

confidence: 99%

“…The authors of this article intend to validate the classic CFD approach with available experimental results and then validate the original method using the numerical results and experimental results. This article aims to compare the velocity fields obtained using two numerical approaches: URANS with the ReNormalisation Group (RNG) k-ε model and the actuator cell model developed by Rogowski [12,13].…”

Section: Introductionmentioning

confidence: 99%

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

Rogowski

Hansen

2019

E3S Web Conf.

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This paper presents numerical results of a one-bladed vertical axis wind turbine using the k-ε RNG turbulence model. The rotor geometry was developed based on the research report available on the literature. The obtained results of aerodynamic blade loads and wake profiles downstream behind the rotor are in a good agreement with the experiment. This paper presents also the ability of calculating fluid flow parameters around the operating wind turbine by using the original approach – the actuator cell model (ACM).

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Scale Adaptive Simulation Model for the Darrieus Wind Turbine

Cited by 15 publications

References 10 publications

2-D CFD Computations of the Two-Bladed Darrieus-Type Wind Turbine

2-D CFD Computations of the Two-Bladed Darrieus-Type Wind Turbine

A Novel Aerodynamic Noise Reduction Method Based on Improving Spanwise Blade Shape for Electric Propeller Aircraft

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

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