Flexcom 2026.1.1 |
 
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Flexcom 2026.1.1 |
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The following faults are present in Flexcom 2026.1.1. More detailed information on each fault is provided in the following sections.
No |
Issue |
Severity |
1 |
Aerodynamic forces on wind turbine blade applied at structural centre rather than aerodynamic centre |
Major |
•Related Topics: Wind Turbine Modelling
•Description: The application of aerodynamic forces and moments in the flexible blade model are not taking into account the spatial offset between the structural centre and the aerodynamic centre on the blade cross section. A similar limitation applies to the application of mass terms at the centre of gravity, although this is likely to be less significant. So, although the blade structural properties are correctly represented by the relevant stiffness terms, the twisting moment induced by the spatial offset is neglected. This could lead to some inaccuracy in deformational blade twist induced by the wind loads, particularly near rated wind speed where the forces are largest. Notwithstanding this limitation, the structural twist due the physical shape of the blade, and the rigid body twist imparted by the control system, are both correct. As these terms account for the majority of the overall twist angle, the local angle of attack and the corresponding aerodynamic forces should be quite close to their theoretical values.
•Workaround: There is no workaround, so you are advised to upgrade to Flexcom 2026.1.2 or later.