High-damping, high-Reynolds VIV tests for energy harnessing using the VIVACE converter

The VIVACE converter enhances VIV to harness horizontal hydrokinetic energy of water flows. High-Reynolds and high-damping are required to operate VIVACE in ocean/river currents. Scarce VIV data exist in that parametric subspace. Tests are performed for Reynolds number 40,000

► High-amplitude, high-damping VIV is maintained In the high-lift TrSL3 and TrBL0 flow regimes.
► VIV strongly depends on Reynolds in the range 40,000► The amplitude ratio (A/D) increases with Reynolds number within the upper branch of VIV.
► In TrSL3/TrBL0, A/D of 1.78 was achieved for a smooth-surface cylinder routinely in low damping.
► Power density of 98.2 W/m3 at 1.03 m/s (2 knots) is achieved including space between cylinders.