Investigation on the Characteristic and Motion of the Damaged Cabin in Waves

Abstract

The ship flooding process is very complicated which will affect the stability and the maneuverability directly, even endangering the ship, people's lives, and property. This paper carries out the experiment and numerical investigation of cabins with openings to study the mechanism of ship flooding. Firstly, the cabin model experiment is conducted in a wave flume. A cabin experimental model with an opening has been designed and manufactured. Then the model is forced to roll in the wave flume, and the phenomenon of water entry is captured with whole conditions. Secondly, the volume of fluid (VOF) model is used to solve the Reynolds-averaged Navier-Stokes equations, as well as with the overset mesh technology is employed to calculate the process of the water entering. The cabin models with different openings are employed for the simulations. The hydrodynamic models of cabins are simulated in rolling in static water. The experimental results and numerical results are compared and analyzed, which verifies the numerical method. Finally, the damaged cabin is simulated in waves with the CFD method, and the characteristic of the damaged cabin is investigated. The water entry impacts the rolling and heaving motion of the cabin. Overall, the CFD simulations show the ability to calculate the nonlinear process of the water entry even though the more precise free surface capturing technology needs be investigated and the efficiency of the CFD method should be improved.