Parametric Study and Comparison of Aerodynamics Momentum-Based Models for Straight-Bladed Vertical Axis Wind Turbines

Mohammed, Amin A.; Ouakad, Hassen M.; Sahin, Ahmet Z.

doi:10.1007/s13369-019-04133-w

Cited by 3 publications

(2 citation statements)

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“…The second shortcoming of this work is the lack of a dynamic stall model in the aerodynamic part, which is the main reason for the discrepancy between the modeling results and experimental data at low tip speed ratios. However, it was shown in previous work [34] that using the DMST model with tip loss correction can only predict the aerodynamic loads with high accuracy. Moreover, as shown in Fig.…”

Section: Resultsmentioning

confidence: 98%

“…Though they have higher deformation, SB-VAWTs permit the size of the rotor to be reduced to a reasonable value for a specified performance. It was found in previous work [34], that starting from an aspect ratio of around one and reducing the diameter of the SB-VAWT significantly improve the performance and enhance the peak power, emphasizing the suitability of straight blade turbines for small rotor sizes and low wind situations. Finally, the geometric simplicity and low manufacturing cost may compensate for the high bending moments issue [38,43].…”

Section: Structural Displacement Due To Aerodynamic Forces Onlymentioning

confidence: 92%

See 1 more Smart Citation

Aeroelastic analysis of straight-bladed vertical axis wind turbine blade

Fadlalla¹,

Şahin²,

Ouakad³

2022

FME Transactions

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To prevent flutter phenomena in a wind turbine, minimize vibration and increase the blades' life, a systematic analysis is required to investigate the effects between the cyclic aerodynamic loads and the structural performance of the turbine. A dynamic analysis of a straight-bladed vertical axis wind turbine (SB-VAWT) blade is investigated in this paper, and a simplified approach for the energy equations of an Eulerian beam subjected to twist and transverse bending deflections is introduced. The aerodynamic loads are estimated using the double multiple stream tube models. They are introduced into the dynamic model in the aeroelastic coupling, where the structural displacements are fed back to update the aerodynamic loads by utilizing the average acceleration method for the numerical integration of the equations. Reduced order modeling is then imposed based on the first modes of vibration. It is found that the structural displacement has little effect on the aerodynamic loads, and SBVAWTs experience higher transverse displacements compared with those in curved-blade VAWTs.

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Section: Resultsmentioning

confidence: 98%

Section: Structural Displacement Due To Aerodynamic Forces Onlymentioning

confidence: 92%