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Interface dynamics with heat and mass fluxes

Ilyin, Dan V. and Abarzhi, Snezhana I. (2022) Interface dynamics with heat and mass fluxes. Physics Letters A, 426 . Art. No. 127827. ISSN 0375-9601. doi:10.1016/j.physleta.2021.127827.

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Unstable interfaces ubiquitously occur in fluids, plasmas and materials, from the celestial event of supernova to the atomic level of plasma fusion. Knowledge of their fundamentals is in demand in science, mathematics, and engineering. Our work considers the classical problem of stability of a phase boundary having heat and mass fluxes across it and yields a rigorous theory resolving challenges not addressed before. By employing self-consistent boundary conditions for thermal heat flux, by identifying the perturbation waves' structure, and by thoroughly investigating the dependence of waves' coupling on system parameters, we discover new fluid instabilities in the advection, diffusion and low Mach regimes. We find that the interface stability is set primarily by the interplay of macroscopic inertial stabilization with destabilizing acceleration, and the microscopic thermodynamics and thermal heat flux creates vortical fields in the bulk.

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Additional Information:© 2021 Published by Elsevier. Received 23 October 2021, Accepted 6 November 2021, Available online 11 November 2021. CRediT authorship contribution statement. Dan V. Ilyin: Investigation, Formal analysis, Writing – original draft, Visualization, Validation, Methodology. Snezhana I. Abarzhi: Conceptualization, Formal analysis, Investigation, Methodology, Writing – original draft. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Subject Keywords:Interface dynamics; Interfacial mixing; Instabilities; Phase boundary; Boundary conditions
Record Number:CaltechAUTHORS:20211220-954649000
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Official Citation:Dan V. Ilyin, Snezhana I. Abarzhi, Interface dynamics with heat and mass fluxes, Physics Letters A, Volume 426, 2022, 127827, ISSN 0375-9601,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112583
Deposited By: George Porter
Deposited On:21 Dec 2021 20:18
Last Modified:21 Dec 2021 20:18

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