Numerical assessment of symmetric wedge water-entry impact using OpenFOAM

Abstract

The hydrodynamic problem of a two-dimensional symmetric wedge vertically entering the water, initially flat, with a deadrise angle of 30◦ is considered at a constant speed of 3m/s. The solver overInterDyMFoam in OpenFOAM has been used for the simulation. The effects of turbulent and laminar flow assumptions and for the laminar flow, the effect of viscosity, gravity, and surface tension on pressure distributions along the wedge’s walls have been investigated during the early stage of penetration. The k-ε method has also been used to model the turbulence effect. It is illustrated that turbulence, viscosity, and surface tension have negligible effects on the pressure distribution during the early stage of wedge-water entry. However, the pressure distribution is found to be significantly influenced by gravity.