Two-dimensional nonlinear parametric sloshing in the irregular tanks: numerical analysis and experimental investigation

The finite volume and volume of fluid (VOF) methods are used to simulate the two-dimensional nonlinear parametric sloshes in the U-shaped and the circular tanks. An experiment is simultaneously conducted to observe and measure the responses of two-dimensional nonlinear parametric sloshes. The natural frequencies and the nonlinear steady-state amplitude-frequency responses are respectively acquired and compared by numerical and experimental methods. The numerical results have a good agreement with the experimental values. Because the viscous damping is automatically considered in the numerical simulations, the steady-state wave amplitudes of parametric resonance (sloshing) are well predicted. The finite volume and VOF techniques aided by Fluent Code can be a practical tool for the engineers to analyze the long-time nonlinear parametric sloshing in arbitrary-shape tanks.