Research on liquid tank sloshing characteristics under large-amplitude excitation
Sloshing load is one of the key problems in the structural design of large liquid cargo ships.In this paper,the sloshing characteristics of liquid tanks under large amplitude excitation are studied based on numerical simulation method.The factors considered include loading rate,large amplitude sway excitation and large amplitude sway heave excitation.In this paper,the CFD code Fluent solver based on the finite volume method is used to drive the tank motion through the dy-namic grid technology,and the VOF method is used to track the nonlinear motion process of the free surface.The results show that the first natural frequency of liquid deviates from the theoretical value under large amplitude excitation;With the increase of excitation amplitude,the sloshing pressure increases linearly to nonlinearly,and finally reaches saturation;Com-pared with the tank excited by large sway heave coupling,the pressure characteristics of the tank excited by large sway are similar under low loading,while the sloshing pressure of the tank excited by large sway heave is higher under medium and high loading.
impact pressurelarge amplitude lateral excitationlarge amplitude sway-heave coupling excitationresonance frequency
万方数据
维普
