Parametric study on impact of delamination on flutter velocity of wind turbine blade structure

Kumar, Hemanth; Anand, R. B.

doi:10.1063/1.5078999

Cited by 1 publication

(2 citation statements)

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“…It can be extended to determine the impact of prebending of the blade on AEP (annual energy production) which can also be studied as the prebending will cause the turbine to have a higher AEP than rotors having straight blade due to the increase in the angle of attack along the length of the blade. And also, the impact of glue delamination of blade structure on flutter limits can be analysed [34].…”

Section: Discussionmentioning

confidence: 99%

“…Chunli Liu et al [33] suggested the new method of estimating the remaining useful life prediction of supercapacitors in energy storage devices. Further the occurrence of flutter instability in delaminated wind turbine blades has been studied [34]. Although these studies have analysed and revealed how prebending of the structure is altering the structural properties and stability, very few studies have been made to understand its influence on flutter limit.…”

Section: Introductionmentioning

confidence: 99%

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The Impact of Critical Flutter Velocity in Composite Wind Turbine Blade with Prebend Condition

Kumar¹,

Jagadeesh²,

Anand

et al. 2022

Mathematical Problems in Engineering

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The present work focuses on the effect of flutter in prebend 100 m horizontal axis wind turbine blade (HAWT) within the stability limits. The study was carried out with an advanced beam model for idyllic structure in a DU-97-W-300 cross-sectional area. A Galerkin type of approach has been applied to derive the equations, and the analysis was performed using a standard FEA code which involves the PK method and double lattice method for calculating flutter solution and aerodynamic loads respectively. The results reveal the significance of inducing prebending to improve the stability of the blade structures, and hence, the flutter velocity has moved from 11 m/s to 23 m/s. Furthermore, the output highlights the effect of prebending on the structural stability and also the flutter limit was found to be lengthened.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%