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Thermodynamically consistent diffuse-interface mixture models of incompressible multicomponent fluids
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DOI：10.1017/jfm.2024.502.png)
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Abstract
En 中文
The prototypical diffuse-interface model for incompressible fluid mixtures is the Navier-Stokes Cahn-Hilliard (Allen-Cahn) model. Despite its foundation in continuum mixture theory, it is not fully compatible with this theory due to the diffusive flux approximation. This paper introduces a class of thermodynamically consistent diffuse-interface incompressible fluid mixture models that is fully compatible with the continuum theory of mixtures. The proposed models can be formulated in either constituent or mixture quantities, enabling a direct comparison with the Navier-Stokes Cahn-Hilliard (Allen-Cahn) model with non-matching densities. This comparison reveals the key modelling simplifications employed in the latter.
Keywords:
Navier-Stokes equations
Journal
IF:
3.9
Papers:
2.0W
Citations:
9.4W