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An average bubble number density (ABND) model was formulated and numerically resolved for the subcooled flow boiling of liquid nitrogen. The effects of bubble coalescence and breakup were taken into account. Some new closure correlations describing bubble nucleation and departure on the heating surface were selected as well. For the purpose of comparison, flow boiling of liquid nitrogen was also numerically...
The transient process of thermal stratification in liquid nitrogen (LN2) induced by lose of vacuum in a multi-layer insulated cryogenic tank is investigated both experimentally and numerically. In the experiments, distribution and evolution of the liquid temperature is obtained using thermocouples. Then, two-dimensional numerical computations are performed, using the two-fluid model together with...
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