Numerical Prediction of Wave Impact on Vertical Wall Attached with Recurved Parapet
In this paper,the interaction between the full-scale breaking wave and vertical wall attached to the recurved parapet is numerically investigated using the in-house computational fluid dynamics(CFD)solver naoe-FOAM-SJTU,which is developed based on the OpenFOAM framework.The irregular waves are generated by utilizing the generating-absorbing boundary condition,and the free surface is captured by the volume of fluid method(VOF)based on the piecewise linear interface calculation method.Wave probes are set up at different locations before the wall and pressure probes are placed on the wall surface.The predicted wave elevation and surface pressure are compared with experimental data.The results show that,induced by the incident waves,reflected waves,and air vortex field,there will be two distinct peak areas formed on the free surface near the seawall.Besides,following fluid flow,the impact pressure on the seawall will transfer towards the top and the bottom,leading to high-frequency pressure oscillations at the top of the recurved parapet.It is observed that the recurved parapet section could mitigate overflow issues by transforming upwelling fluid into horizontal jet flows,thus significantly altering the structure of the gas-phase vorticity field.
vertical wall with recurved parapetimpact loadsgeometric VOF methodbreaking waves
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