Numerical Simulation of Atomization Characteristics of Perfluorohexanone under Low-Pressure Environment

Abstract Since perfluorohexanone can play a role in cooling and extinguishing the heat loss of lithium batteries, it is urgent to study atomization characteristics different ambient pressures (49 kPa, 75 101 kPa) ensure flight safety all-electric aircraft future storage use lithium-ion battery high plateau areas. The process primary secondary breakup was studied by using VOF-DPM model, influence environmental on development its analyzed. results showed that liquid sheet caused Kelvin Helmholtz/Rayleigh-Taylor (KH-RT), while mainly RT instability. Under pressures, Sauter Mean Diameter (D 32 ) along spray axis decreases sharply at first then increases slowly. As air density with decrease pressure, D gradually increases, resulting mass. Moreover, when drops from kPa 49 droplets 38% 51%, which conducive providing evidence for effectiveness fire under low-pressure conditions.