About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Classical theory of nucleation applied to condensation of a Lennard-Jones fluid |
Author(s) |
Yijian Wu, Thomas Philippe |
On-Site Speaker (Planned) |
Yijian Wu |
Abstract Scope |
Liquid-liquid phase separation (LLPS) is crucial in two-step crystallization. Classical nucleation theory (CNT) exhibits several unphysical shortcomings when studying LLPS. To address this, we propose a straightforward two-variable nucleation theory with the size and the density of the cluster as variables. Thermodynamic properties are calculated using perturbation theory, and kinetic properties are derived from dynamical density functional theory. Our theory is applied to Lennard-Jones and ten Wolde-Frenkel systems, offering insights into critical cluster properties and nucleation flux direction. At low supersaturation, results align with CNT, while at moderate to high supersaturation, our theory is more accurate. Near the spinodal limit, the work of formation of the critical cluster approaches zero, consistent with our theory but not with CNT. Furthermore, our theory reveals a smooth transition in the nucleation flux direction, a phenomenon that CNT fails to capture. These predictions agree well with molecular dynamic simulations. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Other, Modeling and Simulation |