TY - JOUR
T1 - Simulation of van der Waals liquid droplets within a hot air atmosphere using the smoothed particle hydrodynamics method
AU - Troconis, Jorge
AU - Sánchez-Silva, Florencio
AU - Carvajal-Mariscal, Ignacio
AU - Peña-Polo, Franklin
AU - Sigalotti, Leonardo Di G.
AU - Klapp, Jaime
N1 - Publisher Copyright:
© 2022
PY - 2023/3
Y1 - 2023/3
N2 - The mass and heat transfer of van der Waals liquid droplets within a hot air atmosphere in microgravity have been studied using adaptive Smoothed Particle Hydrodynamics by assuming that the gas atmosphere is in contact with a thermal reservoir for a single-component two-dimensional system. A better definition of the diffuse interface between the phases was obtained through the introduction of a Korteweg tensor. As in previous works, the best initial particle distribution was obtained using the process of spinodal decomposition. The temperature obtained from the van der Waals cycle was compared with the temperature that arises from the integration of the conservation laws that contain the heat-flux vector. The calculated temperature profiles are the same for both the liquid and gas phases. The interface satisfies the condition of coexistence between the phases. In addition, the mass and heat transfer rates as well as the decrease of the drop radius were obtained for the three temperatures studied, finding that these are enhanced as the temperature of the reservoir is increased. Finally, it was possible to observe a damped oscillatory behavior of the temperature between the liquid phase and the interface for the first instants of time. We conclude that this is the mechanism by which the areas with lower temperature within the drop are heated before starting the mass transfer between the liquid and the gas phase.
AB - The mass and heat transfer of van der Waals liquid droplets within a hot air atmosphere in microgravity have been studied using adaptive Smoothed Particle Hydrodynamics by assuming that the gas atmosphere is in contact with a thermal reservoir for a single-component two-dimensional system. A better definition of the diffuse interface between the phases was obtained through the introduction of a Korteweg tensor. As in previous works, the best initial particle distribution was obtained using the process of spinodal decomposition. The temperature obtained from the van der Waals cycle was compared with the temperature that arises from the integration of the conservation laws that contain the heat-flux vector. The calculated temperature profiles are the same for both the liquid and gas phases. The interface satisfies the condition of coexistence between the phases. In addition, the mass and heat transfer rates as well as the decrease of the drop radius were obtained for the three temperatures studied, finding that these are enhanced as the temperature of the reservoir is increased. Finally, it was possible to observe a damped oscillatory behavior of the temperature between the liquid phase and the interface for the first instants of time. We conclude that this is the mechanism by which the areas with lower temperature within the drop are heated before starting the mass transfer between the liquid and the gas phase.
KW - Droplets
KW - Heat flux
KW - Korteweg'S tensor
KW - Mass and heat transfer
KW - Smoothed particle hydrodynamics
KW - Van der waals
UR - http://www.scopus.com/inward/record.url?scp=85144408976&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2022.123749
DO - 10.1016/j.ijheatmasstransfer.2022.123749
M3 - Artículo
AN - SCOPUS:85144408976
SN - 0017-9310
VL - 202
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
M1 - 123749
ER -