Abstract
This chapter presents the geometrically exact beam theory implemented by the Legendre-spectral-finite-element (LSFE) method. An LSFE is a high-order finite element with nodes located at the Gauss-Legendre-Lobatto points. These elements can be an order of magnitude more computationally efficient than low-order finite elements for a given accuracy level. The new module, BeamDyn, is incorporated in the FAST modularization framework for dynamic simulation of highly flexible composite-material wind turbine blades. The framework allows for fully interactive simulations of turbine blades in operating conditions. A numerical example using the NREL 5-MW wind turbine is provided to validate BeamDyn and examine the LSFE performance as well as the coupling algorithm in the FAST modularization framework.
This chapter has been published on Journal of Wind Energy, Vol. 20, Issue 8, page 1439–1462.
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Wang, Q. (2018). Advanced Wind Turbine Dynamics. In: Hu, W. (eds) Advanced Wind Turbine Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-78166-2_6
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DOI: https://doi.org/10.1007/978-3-319-78166-2_6
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