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Comparison of simplified model and FEM model in coupled analysis of floating wind turbine

Authors
김병완홍사영성홍근홍석원
Issue Date
1-9월-2015
Publisher
Techno Press
Keywords
floating wind turbine; tower; blade; simplified model; FEM
Citation
Ocean Systems Engineering, v.5, no.3, pp 221 - 243
Pages
23
Journal Title
Ocean Systems Engineering
Volume
5
Number
3
Start Page
221
End Page
243
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8151
Abstract
This paper compares simplified and finite element method (FEM) models for tower and blade in dynamic coupled analysis of floating wind turbine. A SPAR type wind turbine with catenary mooring lines is considered in numerical analysis. Floating body equation is derived using boundary element method (BEM) and convolution. Equations for mooring line, tower and blade are formulated with theories of catenary, elastic beam and aerodynamic rotating beam, respectively and FEM is applied in the formulation. By combining the equations, coupled solutions are calculated. Tower or blade may be assumed rigid or lumped body for simplicity in modeling. By comparing floating body motions, mooring line tensions and tower stresses with the simple model and original FEM model, the effect of including or neglecting elastic, rotating and aerodynamic behavior of tower and blade is discussed.ng body equation is derived using boundary element method (BEM) and convolution. Equations for mooring line, tower and blade are formulated with theories of catenary, elastic beam and aerodynamic rotating beam, respectively and FEM is applied in the formulation. By combining the equations, coupled solutions are calculated. Tower or blade may be assumed rigid or lumped body for simplicity in modeling. By comparing floating body motions, mooring line tensions and tower stresses with the simple model and original FEM model, the effect of including or neglecting elastic, rotating and aerodynamic behavior of tower and blade is discussed.
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친환경해양개발연구본부 > 심해공학연구센터 > Journal Articles
해양플랜트연구본부 > Deep Ocean Engineering Research Center > 1. Journal Articles

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