There are many advantages of floating wind turbines in deep waters, however, there are also significant technological challenges associated with it too. The dynamic excitation of wind and waves will induce excessive motions along each of the 6 degrees of freedom (6-DOF) of the floating platforms. These motions will then be transferred to the turbine, and directly impact the turbines’ performanc...

Because of their long submerged columns, deep-draft semi-submersible floating structures are particularly susceptible to vortex-induced motions. This paper focuses on the steady and unsteady forces that act such a column pair, as well frequency strength shed vortices behind downstream column. Wind tunnel experiments were performed two rounded lightly rough square-section prisms in cross-flow fo...

This paper presents the characteristics of heave motion responses and hydrodynamic forces a horizontal floating circular cylinder during wave–current interaction. A two-dimensional numerical model based on CFD (Computational Fluid Dynamics) method for modeling wave flow is validated verified. The were calculated analyzed under conditions different k values (stiffness spring), amplitudes, submer...

We propose two novel ways to alleviate the reverse conducting insulated gate bipolar transistor (RC-IGBT) snapback phenomenon by introducing the floating field stop layer with a lightly doped p-floating layer and recess structure at the backside. The floating field stop layer is submerged in the N-drift region and located several micrometers above the P+ anode region, which would not degrade th...

Turbulent Flow in wetlands with submerged and floating aquatic plants was studied by applying Boit’s poroelastic theory to turbulent flow. The velocity distribution formulas were described by solving the modified Bessel equations. The effects of plant porosity and turbulent coefficient on the velocity distribution, shear stress distribution and energy relations were analytically derived. Severa...