Steady and unsteady analysis of NACA 0018 airfoil in vertical-axis wind turbine

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

doi:10.15632/jtam-pl.56.1.203

Cited by 18 publications

(9 citation statements)

References 18 publications

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“…Oczywiście dostępne są również wyniki innych badań dotyczących profili NACA XXXX, są one jednak ograniczone np. do jednego profilu czy też do jednej liczby Reynoldsa [11].…”

Section: Wstępunclassified

Analiza własności aerodynamicznych profilu NACA 0018 w zakresie małych liczb Reynoldsa

Kątski¹,

Rogowski²

2020

Mechanika W Lotnictwie ML-XIX 2020

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W pracy przedstawiono rezultaty badań numerycznych profilu aerodynamicznego NACA 0018 w zakresie małych liczb Reynoldsa od 10 000 do 1mln oraz w zakresie kątów natarcia od 0◦ do 20◦. Wyniki zaprezentowano w postaci charakterystyk współczynników siły nośnej i oporu w funkcji kąta natarcia. Badania przeprowadzono, wykorzystując model turbulencji k-! SST oraz hybrydową siatkę obliczeniową złożoną z siatki strukturalnej w pobliżu krawędzi profilu oraz siatkę niestrukturalną w pozostałym obszarze domeny obliczeniowej. Intencją autorów pracy było pokazanie możliwości zastosowania podejścia numerycznego w badaniach profili w zakresie małych liczb Reynoldsa. Przeprowadzone badania pokazały, że minimalna liczba Reynoldsa, przy której wartość błędu jest akceptowalna, wynosi 40 000. Rezultaty badań symulacyjnych sił aerodynamicznych przedstawiono również tabelarycznie do wykorzystania w innych analizach.

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“…Oczywiście dostępne są również wyniki innych badań dotyczących profili NACA XXXX, są one jednak ograniczone np. do jednego profilu czy też do jednej liczby Reynoldsa [11].…”

Section: Wstępunclassified

Analiza własności aerodynamicznych profilu NACA 0018 w zakresie małych liczb Reynoldsa

Kątski¹,

Rogowski²

2020

Mechanika W Lotnictwie ML-XIX 2020

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“…design was chosen, in addition to CFD simulations by the authors a comparative analysis by Parashivoiu shows them to have better structural reliability than dual blade designs (Parashivoiu, 2002). The model used the NACA 0018 symmetrical airfoil, a classical VAWT airfoil used both in CFD based studies (Rogowski et al, 2018) and experiments (Laneville and Vittecoq, 1986).…”

Section: Figure 1 Wut Variable Turbulence Tunnelmentioning

confidence: 99%

Wind tunnel comparison of four VAWT configurations to test load-limiting concept and CFD validation

Wiśniewski¹,

Rogowski²,

Gumowski³

et al. 2020

Preprint

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Abstract. The article describes results of experimental wind tunnel testing of four different straight bladed vertical axis wind turbine model configurations. The experiment tested a novel concept of vertically dividing and azimuthally shifting a turbine rotor into two parts with a specific uneven height division in order to limit cycle amplitudes and average cycle values of bending moments at the bottom of the turbine shaft to increase product lifetime, especially for industrial scale turbines. Testing reduction effects of simultaneously including a vertical gap between turbine rotor levels, increasing shaft length but also reducing aerodynamic interaction between rotor levels, has also been performed. Experiment results have shown very significant decreases of bending moment cycle amplitudes and average cycle values, for a wide range of measured wind speeds, for dual-level turbine configurations as compared to a single-level turbine configuration. The vertical spacing between levels equal to a blade's single chord length has proven to be sufficient, in laboratory-scale, to limit interaction between turbine levels in order to achieve optimal reductions of tested parameters through an operating cycle shift between two position-locked rotor levels during a turbine's expected lifetime. CFD validation of maintaining the effect in industrial scale has been conducted, confirming the initial conclusions.

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“…The research majorly focuses on the analysis of steady and unsteady lift and drag coefficients over the airfoil blade. On comparing the outcome of the lift force coefficient attained amidst, two separate modeling gives indicative variance in the static stall regions [14].…”

Section: Literature Reviewmentioning

confidence: 99%

DMST Approach for Analysis of 2 and 3 Bladed Type Darrieus Vertical Axis Wind Turbine

Roga¹,

Dubey²

2018

EAI Endorsed Transactions on Energy Web

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Wind energy has lately been one of the world's leading outlets of clean energy for producing power in potential environments across the globe. Academics currently undertake numerous analysis practices to improve and refine current wind turbine designs by means of advanced and diverse computational techniques. Various computations tools based on Computational fluid dynamics are available. However, these require a lot of computational time and hardware resources. On the other side, readily accessible basic methods like QBlade are computationally cheap and could be used for efficiency and design analysis of wind turbines on the horizontal and vertical axis. The present study is based on the variable pitch study of vertical axis wind turbine (VAWT) of straight blade NACA0018 airfoil for low speed utilizing QBlade software. The results are validated and compared with the experimental results and it was found to be in good agreement with them for TSR ranging from 1 to 6.

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Steady and unsteady analysis of NACA 0018 airfoil in vertical-axis wind turbine

Cited by 18 publications

References 18 publications

Analiza własności aerodynamicznych profilu NACA 0018 w zakresie małych liczb Reynoldsa

Analiza własności aerodynamicznych profilu NACA 0018 w zakresie małych liczb Reynoldsa

Wind tunnel comparison of four VAWT configurations to test load-limiting concept and CFD validation

DMST Approach for Analysis of 2 and 3 Bladed Type Darrieus Vertical Axis Wind Turbine

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