Transient Response Analysis of Multi-layer Sloshing Fluid in LNG Tank

Abstract The stratified LNG is the potential cause of rollover, so analysis interface behavior very important. In this work, a three-layer dynamic simulation model BOG, LNG, and liquid nitrogen sloshing in tank was built. transient behaviors layers were simulated, effects factors such as period (T = 0.2, 0.4, 0.6, 0.8 1.0 s) amplitude (A=0.01~0.06 rad) analyzed. It found that instability aggravated over time. There specific which fluid relatively stable, away from layer became less stable. influence on presented wave characteristic. results coupling with different periods showed most severe when 0.2 s 0.05 rad.