Affiliations: Department of Global Environmental Engineering, Kyoto
University, Kyoto-shi, 606-8501, Japan. e-mail: [email protected]
Abstract: A numerical prediction method has been proposed to predict
non-linear free surface oscillation in a three-dimensional container. The fluid
motions are numerically predicted with Navier-Stokes equations discretized in a
Lagrangian scheme with sufficient numerical accuracy. The profile of a free
surface is precisely represented with three-dimensional body-fitted coordinates
(BFC), which are regenerated in each computational step on the basis of the
arbitrary Lagrangian-Eulerian (ALE) formulation. The computational method was
applied to non-linear sloshings and transitions from sloshing to swirling
motions. The predicted free surface motions were visualized as sequential image
files and animations to understand their dynamic futures.