Reaction-limited evaporation for the color-gradient lattice Boltzmann model
Nath G, Aouane O, Harting J (2025)
Publication Type: Journal article
Publication year: 2025
Journal
Book Volume: 162
Article Number: 114110
Journal Issue: 11
DOI: 10.1063/5.0253799
Abstract
We propose a reaction-limited evaporation model within the color-gradient lattice Boltzmann (LB) multicomponent framework to address the lack of intrinsic evaporation mechanisms. Unlike diffusion-driven approaches, our method directly enforces mass removal at the fluid interface in a reaction-limited manner while maintaining numerical stability. Using the inherent color-gradient magnitude and a single adjustable parameter, evaporation sites are chosen in a computationally efficient way with seamless mass exchange between the components, with no change to the core algorithm. Extensive validation across diverse interface geometries and evaporation flux magnitudes demonstrates high accuracy, with errors below 5% for unit density ratios. For density contrasts, the method remains robust in the limit of smaller evaporation flux magnitudes and density ratios. Our approach extends the applicability of the color-gradient LB model to scenarios involving reaction-limited evaporation, such as droplet evaporation on heated substrates, vacuum evaporation of molten metals, and drying processes in porous media.
Involved external institutions
Germany (DE)How to cite
APA:
Nath, G., Aouane, O., & Harting, J. (2025). Reaction-limited evaporation for the color-gradient lattice Boltzmann model. Journal of Chemical Physics, 162(11). https://doi.org/10.1063/5.0253799
MLA:
Nath, Gaurav, Othmane Aouane, and Jens Harting. "Reaction-limited evaporation for the color-gradient lattice Boltzmann model." Journal of Chemical Physics 162.11 (2025).
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