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http://dx.doi.org/10.18770/KEPCO.2016.02.03.461

Dynamic Stability Analysis of Floating Transport Wind-Turbine Foundation Considering Internal Fluid Sloshing Effect  

Hong, Seokjin (Graduate Sschool of Mechanical and Aerospace Eng., Gyeongsang National Univ. and CAE-KOREA Co., Ltd.)
Kim, Donghyun (Graduate Sschool of Mechanical and Aerospace Eng., Gyeongsang National Univ. and CAE-KOREA Co., Ltd.)
Kang, Sinwook (Graduate Sschool of Mechanical and Aerospace Eng., Gyeongsang National Univ. and CAE-KOREA Co., Ltd.)
Kang, Keumseok (KEPCO Research Institute, Korea Electric Power Corporation)
Publication Information
KEPCO Journal on Electric Power and Energy / v.2, no.3, 2016 , pp. 461-467 More about this Journal
Abstract
In order to install the floating transport type wind-turbine foundation, water pumping is used to sink the foundation. During this process, its mass and center of gravity, and buoyancy center become continuously changed so that the dynamic stability of the floating foundation become unstable. Dynamic stability analysis of the floating foundation is a complex problem since it should take into account not only the environmental wave, wind, and current loads but also its weight change effect simultaneously considering six-degree-of-freedom motion. In this study, advanced numerical method based on the coupled computational fluid dynamics (CFD) and multi-body dynamics (MBD) approach has been applied to the dynamic stability analysis of the floating foundation. The sloshing effect of foundation internal water is also considered and the floating dynamic characteristics are numerically investigated in detail.
Keywords
Floating transport wind-turbine foundation; dynamic stability; CFD; multi-body dynamics; hydrodynamics; sloshing; coupled CFD-MBD analysis;
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