Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session ZC36: Micro/Nano scale Flows: Multiphase
12:50 PM–2:47 PM,
Tuesday, November 21, 2023
Room: 202B
Chair: Ulf Schiller, University of Delaware
Abstract: ZC36.00004 : Pore-scale three-phase model for water phase transitions: impact of melt film generation on wet snow metamorphism*
1:29 PM–1:42 PM
Presenter:
Adrian Moure
(California Institute of Technology)
Authors:
Adrian Moure
(California Institute of Technology)
Xiaojing Fu
(California Institute of Technology)
We propose a pore-scale phase-field model that simultaneously captures the three relevant phase-change phenomena: sublimation (deposition), evaporation (condensation), and melting (solidification). The phase-field formulation allows to track the temperature evolution amongst the three phases and the water vapor concentration in the air. We extend the model to incorporate two-phase flow. Our three-phase model recovers the corresponding two-phase transition model when one phase is not present in the system.
We use 2D simplified geometries to explore the role of melt film generation and distribution in controlling the dynamics of snow metamorphism in contrast to the dry regime. Our 2D simulations also unveil the impact of humidity and temperature on the dynamics of wet snow metamorphism. Our model may be the basis to investigate other problems involving water phase transitions such as airplane icing or thermal spray coating.
*AM and XF acknowledge the support of the Resnick Sustainability Institute at California Institute of Technology.
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