This paper proposes a method of controlling the vortex-induced vibration (VIV) wind turbine towers by adding continuous trapezoidal straight spoiler plates (TS) onto their outer surface: fluid–solid coupling model was constructed to simulate processes Karman vortex generation and shedding on different surfaces an original tower (O–tower) with TS (TS–tower) assumed actual Re, while VIV frequenci...

We probe the reliability of monopile support structures designed to support industrial scale turbines along the coastal United States using stochastic models for the wind and wave loadings, and representations of the uncertainty associated with soil properties. The turbine support structure investigated is that promulgated by the National Renewable Energy Laboratory as typical of a monopile sup...

Bayon temple, Angkor, built in the late 12th century to the early 13th century, is a masonry temple made of sandstone which has deteriorated possibly due to rain, plants, settlements, and so on. Strong winds blowing more than 20m/sec were observed in the rainy season, which may cause vibration of the structure either directly or via ground motion, we may add wind induced vibration to the list o...

We develop a mathematical model of a large-scale cracked Horizontal Axis Wind Turbine (HAWT) describing the flapping flexure of the flexible tower and blades. The proposed model has enough fidelity to be used in health monitoring applications. The equations of motion account for the effect of the applied aerodynamic forces, modeled using the Blade Element Momentum (BEM) theory, and the location...

When considering the future of offshore wind energy, developing cost effective methods of harnessing the offshore wind resource represents a significant challenge which must be overcome to make offshore wind a viable option. As the majority of the capital investment in offshore wind is in the form of infrastructure and operation and maintenance costs, reducing these expenditures could greatly r...

Abstract Multiple rotors on single structures have long been proposed to increase wind turbine energy capture with no in rotor size, but at the cost of additional mechanical complexity yaw and tower designs. Standard turbines their own very-closely-spaced towers avoid these disadvantages create a significant disadvantage; for some directions wake turbulence enters swept area very close downwind...

Deformations affect the structural integrity of wind turbine towers. The health such structures is thus assessed by monitoring. majority sensors used for this purpose are costly and require in situ installations. We investigated whether Multiple-Input Multiple-Output Synthetic Aperture Radar (MIMO-SAR) can be to monitor an automotive-grade, low-cost, off-the-shelf MIMO-SAR sensor operating W-ba...