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Beni-Suef University Journal of Basic and Applied Sciences

Table 1 Natural frequencies of FAST and nonlinear model

From: Variable cross-sectional effect on bi-directional blades–tower–soil–structure dynamic interaction on offshore wind turbine subject to wind–wave loads

 

FAST

Presented model

Error %

First tower FA freq. (Hz)

0.25

0.2502

0.0982

First tower FA freq. (Hz)

0.25

0.2502

0.0982

First blade edgewise freq. (Hz)

1.079

1.0941

1.4020

First blade flapwise freq. (Hz)

0.668

0.6723

0.6404

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