کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4995531 | 1458992 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Three-dimensional coarsening dynamics of a conserved, nematic liquid crystal-isotropic fluid mixture
ترجمه فارسی عنوان
سه بعدی پوسته شدن یک مخلوط مایع کریستال مایع منسوج مایع محافظتی غیر مایع
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 248, October 2017, Pages 62-73
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 248, October 2017, Pages 62-73
نویسندگان
Rudimar L. Nós, Alexandre M. Roma, Carlos J. GarcÃa-Cervera, Hector D. Ceniceros,