•1 min read•from Frontiers in Marine Science | New and Recent Articles
Numerical study on crashworthiness of monopile-supported offshore wind turbine due to iceberg considering fluid-structure interaction
Our take
As offshore wind energy extends into cold-region waters, the resilience of monopile-supported offshore wind turbines (OWTs) against ice impacts becomes critical. This study presents a comprehensive three-dimensional fluid-structure interaction (FSI) model developed in LS-DYNA to assess the dynamic responses of a typical 5 MW OWT under varying ice conditions. By investigating factors such as ice speed, shape, size, and immersion ratio, the research reveals their significant impact on peak forces, energy absorption, and structural displacements, ultimately enhancing our understanding of ice-structure interaction mechanisms.
As offshore wind energy expands into cold-region waters, offshore wind turbines (OWTs) are increasingly exposed to ice-structure interaction. In this study, a three-dimensional fluid-structure interaction (FSI) model was developed in LS-DYNA to simulate the dynamic response of a typical 5 MW monopile-supported OWT subjected to ice impact. The model explicitly accounts for coupled interactions among ice, water, and structure. A systematic parametric study was conducted to explain the effects of ice speed, shape, size, and immersion ratio on the peak impact force, structural energy absorption, local indentation depth, and tower-top acceleration and displacement responses. The response metrics were normalized to conduct a sensitivity analysis. The overall results indicate that ice speed has the greatest influence on the structural response, followed by ice shape, ice size, and the immersion ratio. These findings help improve the understanding of the ice-structure impact mechanism.
Read on the original site
Open the publisher's page for the full experience
Tagged with
#climate change impact#fluid-structure interaction#offshore wind turbine#ice speed#ice impact#crashworthiness#monopile-supported#FSI model#coupled interactions#iceberg#impact force#ice size#dynamic response#ice shape#structural energy absorption#local indentation depth#parametric study#sensitivity analysis#immersion ratio#tower-top acceleration