Abstract
We consider in this paper numerical approximations of two-phase incompressible flows with different densities and viscosities. We present a variational derivation for a thermodynamically consistent phase-field model that admits an energy law. Two decoupled time discretization schemes for the coupled nonlinear phase-field model are constructed and shown to be energy stable. Numerical experiments are carried out to validate the model and the schemes for problems with large density and viscosity ratios.


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Notes
After we derived the model independently, we learned that the identical model was already derived in [2].
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Acknowledgments
The research of C. Liu is partially supported by NSF DMS-1109107 and DMS-1216938. The research of J. Shen is partially supported in part by NSF DMS-1217066 and AFOSR FA9550-11-1-0328. The work of X. Yang is partially supported by SC EPSCOR GEAR program, AFOSR FA9550-12-1-0178 and NSF DMS-1200487.
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Liu, C., Shen, J. & Yang, X. Decoupled Energy Stable Schemes for a Phase-Field Model of Two-Phase Incompressible Flows with Variable Density. J Sci Comput 62, 601–622 (2015). https://doi.org/10.1007/s10915-014-9867-4
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DOI: https://doi.org/10.1007/s10915-014-9867-4