Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4995531 | Journal of Non-Newtonian Fluid Mechanics | 2017 | 12 Pages |
Abstract
We present a numerical investigation of the three-dimensional coarsening dynamics of a nematic liquid crystal-isotropic fluid mixture using a conserved phase field model. The model is a coupled system for a generalized Cahn-Hilliard equation for the order parameter Ï, related to the volume fraction of the nematic component, and a simplified de Gennes-Prost evolution equation for the director field n, which describes the mean orientation of the rigid rod-like, liquid crystal molecules. We find that, as in the two-dimensional system, the orientational distortion induced by interfacial anchoring has profound effects both on the morphology and the coarsening rate. However, we identify significant differences in the three-dimensional and two-dimensional coarsening processes. In particular, we find a remarkable, new 3-stage late coarsening process with markedly different coarsening rates in the three-dimensional bicontinuous phase separation with homeotropic anchoring, unseen in the two-dimensional system.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Rudimar L. Nós, Alexandre M. Roma, Carlos J. GarcÃa-Cervera, Hector D. Ceniceros,