Open AccessDynamical stresses in the high class wind turbine blades caused in nonhomogeneous nonstationary wind field. Part 2 Numerical simulations
Author(s) -
Ivan Kralov,
Julian Genov,
I. A. Angelov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/878/1/012037
Subject(s) - aerodynamics , turbine , turbine blade , momentum (technical analysis) , wind speed , turbulence , blade (archaeology) , wind gradient , field (mathematics) , aerodynamic force , finite element method , mechanics , engineering , structural engineering , physics , wind profile power law , aerospace engineering , mathematics , meteorology , finance , pure mathematics , economics
In this second part of the publication, numerical results for a specific a wind turbine model of a high class – prototype NREL 5MW are presented. A wind speed model is described, taking into account the vertical speed gradient and longitudinal turbulence. Based on the proposed by the authors a modification of Blade Element Momentum theory, the aerodynamic forces, distributed along the length of turbine blades, are calculated as time functions. As a result of this, according to the results of the first part of the publication, the dynamical loads, stresses, and deformations in the blades are calculated.