A spectral volume-penalisation method for thermal fluid-structure interaction in phase-separating binary systems

Domenico Borzacchiello (1) , Adrien Leygue (1) , Francisco Chinesta (1)

1 GeM - Institut de Recherche en Génie Civil et Mécanique

Spinodal decomposition of highly viscous binary mixtures near the critical composition is well described by the Cahn-Hilliard equation. In this short communication we present a model that introduces the thermal effects due to the presence of a solid structure immersed in a phase-separating mixture. The presence of solid boundaries is taken into account by means of a volume-penalisation method based on the phase-field formalism. Numerical experiments are carried out to show the influence of the temperature on the final morphology of the system.

Mots clés: thermal phase separation; volume penalisation; cahn hilliard equation

Domaines: Analyse numérique [math.NA]; Mécanique [physics]; Sciences de l'ingénieur [physics]

Domenico Borzacchiello, Adrien Leygue, Francisco Chinesta. A spectral volume-penalisation method for thermal fluid-structure interaction in phase-separating binary systems. 2nd ECCOMAS Young Investigators Conference (YIC 2013), Sep 2013, Bordeaux, France. ⟨hal-00855863⟩