Stress Analysis of Wind Turbine Tower Flange Using Fluid-Structure Interaction Method

Myoungwoo Lee, Seok Gyu Yoon, Youn Jea Kim*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter


There is growing interest and investment in the renewable energy industry with the goal of promoting eco-friendly growth globally. The proportion of wind power generation systems in the world’s renewable energy market is kept continuously increased and is known as 21.9%. In order to reduce the fossil-fuel power generation capacity, many countries enlarge the investment of the wind power generation systems. As the size of blade enlarges, the installation cost decreases and then the power generation efficiency could be increased. However, as the sizes of the blade and tower are enlarged, the weight and the wind load of itself might be increased. Therefore, it is necessary to develop appropriate components and their build-up technology that can guarantee the structural safety of the wind turbine. In this study, the stress applied to the tower flange when the wind turbine is operating is numerically analyzed. In particular, optimal design value for the aspect ratio of the tower flange was obtained, using fluid-structure interaction (FSI) method. The lowest von Mises stress had an aspect ratio of h1/h2 = 1.40. Numerical analysis of local stress of the tower and flange was calculated using the commercial code ANSYS 18.1.

Original languageEnglish
Title of host publicationNotes on Numerical Fluid Mechanics and Multidisciplinary Design
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages9
Publication statusPublished - 2021
Externally publishedYes

Publication series

NameNotes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN (Print)1612-2909
ISSN (Electronic)1860-0824


  • Fluid structure interaction analysis
  • Tower flange
  • von Mises stress
  • Wind tower

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes


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