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The natural ocean/river currents energy can be harvested using Flow Induced Motion (FIM) phenomena. The effect of damping-ratio and mass-ratio on Flow Induced Motion energy harnessing of a square cylinder are numerically investigated for Reynolds number 15500 < Re < 232000 (0.2 m/s < flow velocity <3.0 m/s). Four typical regions can be observed in the Flow Induced Motion responses, including...
The VIV (Vortex Induced Vibration) energy harvesting of two bluff bodies in tandem arrangement is investigated using two-dimensional numerical simulations in the spacing range of 2–50 diameters. Five groups of bluff bodies with different cross sections (Triangular prism, Square prism, Pentagon prism, Circular cylinder and Cir-Tria prism) are analyzed. To satisfy the needs of practical application,...
The long wake of a wind turbine has a significant impact on the performance of downstream turbines. Under the inspiration of migrating geese flying in a V or I formation to save energy, a novel wake energy reuse method is proposed to optimize the layout for Savonius-type vertical axis wind turbines (S-VAWT). VAWT wakes include a series of high speed and energy zones. On both sides of the upstream...
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