Floating bodies CFD

A numerical IHFOAM coupled model was used to simulate the interaction between incident waves, with varying amplitudes and periods, and a single and multiple thin floating plates. Free surface elevation timeseries were recorded both in the reflected and transmitted field and compared with existing thin/plate linear model predictions. The purpose was to evaluate the effect of water overwashing the upper surface of the plastic plate. Experimental results were used to validate the model. The total energy flux was investigated in the whole numerical domain to evaluate the amount of energy that is dissipated during the wave-plate interaction.

Experimental and numerical models of wave reflection and transmission by an ice floe

Existing mathematical models, based on the traditional thin-plate theory, underestimate waves attenuation for the most energetic waves, since the energy dissipation occurring during the process is not taken into account. New direct numerical simulations were run using a new model obtained coupling coupling a High Order Spectral Numerical Wave Tank with the Navier-Stokes solver IHFOAM. Data  confirm that non-linear effects lead to a decrease of wave transmission.

Vorticity field in the single plate configuration

Comparison between the sum of the energy flux coefficient in the front and rear
field in the case with overwash (blue crosses) and in the case without overwash
(red circles) and the sum of the energy flux coefficient in the front and rear field plus the
plate coefficient (magenta triangles) versus incident ka


A short clip of a numerical thin floating plate


Nelli F, Skene DM, Bennetts LG, Meylan MH, Monty JP, Toffoli A. Experimental and Numerical Models of Wave Reflection and Transmission by an Ice Floe. ASME. International Conference on Offshore Mechanics and Arctic Engineering, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology ():V008T07A015. doi:10.1115/OMAE2017-61248.