Autors: Genov, J. A., Kralov, I. M., Angelov, I. A.
Title: Blade element momentum theory adaptation taking into account non-uniform, non-stationary wind field
Keywords: Aerodynamics, airflowwind, field wind, turbine,wind, velocity

Abstract: The powerful wind generators, producing electric power in the order of megawatts are with significant sizes. The studies on the interaction between the air flow and the wind turbine usually assume that the airflow is homogeneous in vertical direction, which admission is made also in the classical Blade element momentum theory. For the powerful generators the vertical gradient of the wind velocity causes a dependence of the aerodynamic interaction from the azimuth angle and leads to a significant cyclic variability of the forces and moments acting on the blades. This causes additional vibrations and acoustic noise emissions from the turbine, which leads to the deterioration of the work of the wind turbine, of reliability and has a significantly negative impact on the environment.

References

    Issue

    Journal of Environmental Protection and Ecology, vol. 20, issue 3, pp. 1270-1281, 2019, Bulgaria, Scibulcom Ltd., ISSN 13115065

    Copyright Journal of Environmental Protection and Ecology

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    Вид: пленарен доклад в международен форум, индексирана в Scopus