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A fully nonlinear time-domain NWT-simulation tool has been developed with nonlinear viscous-damping and pneumatic pressure terms. The tool was applied to the performance evaluation of fixed/floating sharp-corner and round-corner BBDB WECs. Shape-induced and motion-induced viscous damping for the BBDB system was considered in the potential-flow-based simulation with quadratic pneumatic pressure and...
The fundamental interactions between waves, a floating rigid-body, and a moonpool that is selectively open to atmosphere or enclosed to purposefully induce pressure fluctuations are investigated. The moonpool hydrodynamic characteristics and the hydrodynamic coupling to the rigid-body are derived implicitly through reciprocity relations on an array of field points. By modeling the free surface of...
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