Document Detail


Electrorheological effect and directional non-Newtonian behavior in a nematic capillary subjected to a pressure gradient.
MedLine Citation:
PMID:  18351865     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We consider a capillary consisting of two coaxial cylinders whose core is filled with a nematic liquid crystal (LC) subjected to the simultaneous action of both a pressure gradient applied parallel to the axis of the cylinders and a radial low frequency electric field. We find the configuration of the director of the nematic, initially with an escaped-like configuration, for the flow aligning LC 4'-n-pentyl-4-cyanobiphenyl (5CB) by assuming hard anchoring hybrid boundary conditions. Also, we obtain the velocity profile parametrized by the electric field and the pressure gradient for nonslip boundary conditions. Finally, we calculate exactly the effective viscosity, the first normal stress difference, and the dragging forces on the cylinders. The results show an important electrorheological effect and a directional non-Newtonian response with regions of flow thinning and thickening.
Authors:
Carlos I Mendoza; A Corella-Madueño; J Adrián Reyes
Related Documents :
10980085 - Reversal of the pattern of respiratory variation of doppler inflow velocities in constr...
11093405 - Effects of myocardial contractility on microemboli production by mechanical heart valve...
19025705 - Bench study on active exhalation valve performance.
761325 - An ultrasound doppler technique for the noninvasive determination of the pressure gradi...
16141385 - Potent effects of aerosol compared with intravenous treprostinil on the pulmonary circu...
24662785 - The effect of natural whey proteins on mechanisms of blood pressure regulation.
Publication Detail:
Type:  Journal Article     Date:  2008-01-30
Journal Detail:
Title:  Physical review. E, Statistical, nonlinear, and soft matter physics     Volume:  77     ISSN:  1539-3755     ISO Abbreviation:  Phys Rev E Stat Nonlin Soft Matter Phys     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2008-03-20     Completed Date:  2008-05-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101136452     Medline TA:  Phys Rev E Stat Nonlin Soft Matter Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  011706     Citation Subset:  -    
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, 04510 México, DF, Mexico. cmendoza@iim.unam.mx
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Interfacial anisotropy in the transport of liquid crystals confined between flat, structureless wall...
Next Document:  Monte Carlo simulation of two-dimensional hard rectangles: confinement effects.