.png){kind=icon}
.png){kind=icon}
Return
Study on outlet size effect and mechanism of pool entrainment based on the VOF method
.png){kind=icon}
PRE
AI
Y
R
J
T
G
C
R
S
DOI：10.1016/j.pnucene.2026.106498.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Pool entrainment is a typical phenomenon in nuclear system safety analysis. However, existing theoretical models remain incomplete at high gas velocity conditions, while experimental studies are frequently affected by interference from the outlet structure. To clarify the influence mechanism of the outlet geometry, this study employs the Volume of Fluid method for numerical simulation. The reliability of the numerical method was first verified. Subsequently, this study focused on investigating the influence of outlet dimensions on entrainment behavior. The results show that Efg(h,jg) exhibits a non-monotonic variation with the dimensionless parameter D/D0, reaching its peak at approximately D/D0 ≈ 0.45. Based on the simulation data, an empirical correlation was established to quantify the influence of outlet dimensions on the entrainment rate. It is also found that increasing the outlet dimensions lead to a significant enhancement in both the high-throughput region index and the saturated entrainment limit. The outlet size regulates the coupling between kinetic energy of gas and the droplet escape space by altering the velocity distribution and streamline structure within the container. An excessively small outlet restricts droplet escape, while an overly large outlet reduces kinetic energy. This work clarifies the critical role of outlet geometry in pool entrainment, providing important evidence for refining theoretical models and engineering predictions.
Journal
IF:
3.2
Papers:
5.5K
Citations:
10.0K
Organization
Cited Papers