Validation of SPH-flow on fluid / structure test cases

This validation test cases concerns the impact of a aluminium beam at 30 m/s on undisturbed water. It was initially performed during an PhD funded by GazTransport et Technigaz. The results obtained are compared with a semi-analytical solution provided by Ecole Centrale Marseille and Bureau Veritas. The data compared concern the beam deflection and the vertical force time histories, together with the pressure time histories at several points along the beam. The picture below presents a visualization of the pressure field in water and the stress in the structure at several time steps.

Visualisation of pressure field in water and tress in structure at various instants from top left to right bottom.

Beam deflection (left) and global force (right) time histories


Pressure time histories at several points along the beam

The comparisons of deflection, force and local pressures show very good agreement between the semi-analytical approach and the SPH solution.



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