2025 Volume 2025 Pages 20250004
This study investigates simulations using particle methods for liquid mixing based on free surface wave phenomena. Periodic excitation waves were applied to the gas-liquid interface to induce waves, predicting the mixing process of two liquids. The cubic interpolated propagation (CIP) method was employed to predict the wave phenomena on the liquid surface. Additionally, the moving particle semi-implicit (MPS) method was used to predict the diffusion process of the stirred liquids. The MPS method also predicted the movement, coalescence, and breakup of bubbles introduced from the atmosphere. By utilizing flow velocity information from the CIP method's computational mesh, the MPS method efficiently predicted complex mixing phenomena with fewer meshes. The predicted mixing phenomena showed good agreement with experimental results regarding the size of the swirling flow and the vortex center position. Furthermore, it was revealed that bubbles introduced from the atmosphere affect the mixing process.
