Influence of aspect ratio and fill: Level on the thermal de-stratification in an upright cylindrical tank subjected to lateral sloshing motion

In this paper, a Computational Fluid Dynamics (CFD) model is used to analyze the thermal de-stratification process in a self-pressurized, upright cylindrical tank, half filled with liquid nitrogen. The aspect ratio (H/D) of the cylindrical tank is parametrically varied from 1 to 4 to study the effects of the geometrical dimensions on the thermal de-stratification. Different liquid fill levels (50% & 25% of container height) are also considered to assess the influence of the cryogenic liquid level on the de-stratification process. A kinetics-based Schrage mass transfer model was used to model the interfacial mass transfer due to condensation and evaporation.