On wedge-slamming pressures

The water entry of a wedge has become model test in marine and naval engineering research. Wagner theory, originating 1932, predicts impact pressures, accounts for contributions to the total pressure arising from various flow domains vicinity wetting region on wedge. Here we study slamming pressures cone, impacting keeping constant, well-controlled velocity, throughout process, using high-fidelity sensors. Pressures at two locations impactor are measured during after impact. Pressure time series impactors discussed inertial scales. non-dimensionalised compared with sensor-integrated averaged composite solutions, Logvinovich solution ( Hydrodynamics Flows Free Boundaries . Naukova Dumka, 1969, 4.7), modified solution, generalised models. In addition, provide an independent experimental justification approximations made literature extending three dimensions. second part paper deals pre-impact air cushioning – important concern since it is responsible determining thickness layer trapped upon Using custom-made technique measure air–water interface dynamics as responds build up intervening between free surface. We show both experimentally two-fluid boundary integral simulations, that deflection due air-cushioning fully described by potential flow.