On the unique solvability of a nonlocal phase separation problem for multicomponent systems

• Autorzy: Jens A. Griepentrog
• Języki publikacji: EN

Abstrakty

EN

A nonlocal model of phase separation in multicomponent systems is presented. It is derived from conservation principles and minimization of free energy containing a nonlocal part due to particle interaction. In contrast to the classical Cahn-Hilliard theory with higher order terms this leads to an evolution system of second order parabolic equations for the particle densities, coupled by nonlinear and nonlocal drift terms, and state equations which involve both chemical and interaction potential differences. Applying fixed-point arguments and comparison principles we prove the existence of variational solutions in standard Hilbert spaces for evolution systems. Moreover, using some regularity theory for parabolic boundary value problems in Hölder spaces we get the unique solvability of our problem. We conclude our considerations with the presentation of simulation results for a ternary system.

Kategorie tematyczne

• 47J35: Nonlinear evolution equations
• 45K05: Integro-partial differential equations
• 35K45: Initial value problems for second-order parabolic systems

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Banach Center Publications
• Rocznik: 2004
• Tom: 66
• Numer: 1
• Strony: 153-164

Daty

wydano

2004

Twórcy

autor

Jens A. Griepentrog

• Weierstrass Institute of Applied Analysis and Stochastics, Mohrenstrasse 39, D-12559 Berlin, Germany

Identyfikatory

DOI

10.4064/bc66-0-10