Abstract
Dynamic study of Darrieus turbine bevel spur gear subjected to transient aerodynamic loads is carried out in this study. The aerodynamic torque is obtained by solving the two-dimensional unsteady incompressible Navier–Stocks equation with the k-ω Shear Stress Transport turbulence model. The two-dimensional computational model is validated with experimental results. A three-dimensional dynamic model of one-stage bevel gear system is developed. The periodic fluctuations of the gear meshes’ stiffness and the unsteady aerodynamic torque fluctuations are the main sources of excitation for the gear system. The originality of our work is the correlation between complex aerodynamic phenomena and the mechanical gearing system vibration. The effect of the rotational speed on the overall dynamic behavior of the Darrieus turbine is also discussed. The present study shows that the rotational speed significantly affects the aerodynamic efficiency. Whereas, there is a small influence on the dynamic response of the bevel gear system.
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Mabrouk, I.B., Hami, A.E., Walha, L., Zgal, B., Haddar, M. (2018). Dynamic Vibration of Vertical Axis Wind Turbine Geared Transmission System. In: Haddar, M., Chaari, F., Benamara, A., Chouchane, M., Karra, C., Aifaoui, N. (eds) Design and Modeling of Mechanical Systems—III. CMSM 2017. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-66697-6_9
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DOI: https://doi.org/10.1007/978-3-319-66697-6_9
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