Effect of Gas Bubble on the Sloshing Pressure Simulated by a Multiphase Flow of Droplet and Liquid

Gas bubbles in LNG sloshing may affect the magnitude of the impact pressure due to the density and compressibility. Flow of the entrapped gas bubbles in the LNG sloshing impacting is modeled by the multiphase flow with a continuous liquid flow and a dispersed gas. A multiphase CFD model has been used to understand the effect of the gas bubble on the magnitude of sloshing impact. The CFD model is introduced based on an Eulerian-Eulerian model that employs the Control Volume-Based Finite Element Method (CVFEM). Sloshing pressure obtained by the CFD is imposed on a rectangular insulation panel to investigate the difference of pressures induced by the sloshing pressure with and without gas bubble. The study is focused on the qualitative simulation of the impact velocities and impact pressures induced by the LNG carrying gas bubble. Also, the Fluid-Structure interaction for the bubble flow is discussed.