Non-linear diffusion with concentration-driven flows in miscible systems

The paper applies the established theories of non-linear diffusion and flows driven by surface tension to the dynamical behavior of a miscible mixture. Results are presented for the dissolution of particles initially created by spinodal decomposition but which are subsequently heated into a region o...

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Bibliographic Details
Published in:Polymer (Guilford) 2003-10, Vol.44 (21), p.6707-6712
Main Authors: Cheng, Mary Hongying, Nauman, E.B.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Hydrodynamic interaction
Organic polymers
Phase dissolution
Physicochemistry of polymers
Properties and characterization
Surface tension
Thermal and thermodynamic properties
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Summary:The paper applies the established theories of non-linear diffusion and flows driven by surface tension to the dynamical behavior of a miscible mixture. Results are presented for the dissolution of particles initially created by spinodal decomposition but which are subsequently heated into a region of miscibility. The resulting non-linear diffusion and concentration-driven flows are simulated for a 2D system using zero flux and no slip boundary conditions at the walls. Computer simulations provide valuable information regarding the role of hydrodynamics in the dissolution process.
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(03)00687-6