TY - JOUR
T1 - Experimental observations of the transition between heterogeneous to homogeneous nucleation regimes in flash-boiling atomization
AU - Moshkovich, Y.
AU - Levy, Y.
AU - Sher, E.
N1 - Publisher Copyright:
© 2020
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Here we present an experimental study of the transition from heterogeneous to homogeneous-nucleation in flash-boiling atomization. The study is based on a wide set of experimental results obtained with a high-pressure fluid flowing through a simple nozzle. We used the TSI's Phase Doppler Particle Analyzer to measure the spray characteristics; droplets velocity profile, mean velocity, droplets size and droplets size distribution. We conclude that in the heterogeneous-nucleation regime, a higher temperature results in droplets with a lower mean velocity. Upon transition to the homogeneous-nucleation regime at constant pressure, the mean velocity and the size of droplets noticeably increases. Likewise, while in the heterogeneous-nucleation regime, a higher temperature or a higher-pressure results in a lower droplets size (lower SMD), in the homogeneous nucleation regime this trend reverses for both, i.e., a higher temperature or a higher pressure results in a higher droplets size (higher SMD).
AB - Here we present an experimental study of the transition from heterogeneous to homogeneous-nucleation in flash-boiling atomization. The study is based on a wide set of experimental results obtained with a high-pressure fluid flowing through a simple nozzle. We used the TSI's Phase Doppler Particle Analyzer to measure the spray characteristics; droplets velocity profile, mean velocity, droplets size and droplets size distribution. We conclude that in the heterogeneous-nucleation regime, a higher temperature results in droplets with a lower mean velocity. Upon transition to the homogeneous-nucleation regime at constant pressure, the mean velocity and the size of droplets noticeably increases. Likewise, while in the heterogeneous-nucleation regime, a higher temperature or a higher-pressure results in a lower droplets size (lower SMD), in the homogeneous nucleation regime this trend reverses for both, i.e., a higher temperature or a higher pressure results in a higher droplets size (higher SMD).
UR - http://www.scopus.com/inward/record.url?scp=85092464896&partnerID=8YFLogxK
U2 - 10.1016/j.ijmultiphaseflow.2020.103476
DO - 10.1016/j.ijmultiphaseflow.2020.103476
M3 - Article
AN - SCOPUS:85092464896
SN - 0301-9322
VL - 134
JO - International Journal of Multiphase Flow
JF - International Journal of Multiphase Flow
M1 - 103476
ER -