In this paper, a free-falling flexible wedge into calm water is experimentally studied to understand the relationship between the spray root, peak pressure, and structural response. High-speed cameras are employed to record the spray root propagation, while hydrodynamic loading is measured with an array of pressure transducers. Stereoscopic Digital Image Correlation (S-DIC) is used to measure deflection on the bottom of the wedge during the impact. Experiments are conducted from different drop heights to study the effect of impact velocity. Results are interpreted in light of an experimental data set of a rigid wedge of comparable dimensions. The comparison between the rigid and flexible wedges shows that due to fluid-structure interaction, the evolution of the spray root on a flexible wedge is slightly delayed compared to the rigid one.
Flow Visualization, Hydrodynamics, and Structural Response of a Flexible Wedge in Water Entry Experiments
Javaherian, M. Javad , Ren, Zhongshu , and Christine Marie Gilbert. "Flow Visualization, Hydrodynamics, and Structural Response of a Flexible Wedge in Water Entry Experiments." Paper presented at the SNAME Maritime Convention, Tacoma, Washington, USA, October 2019.
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