Sheared Nematic Liquid Crystal Polymer Monolayers

Abstract

We provide a comprehensive study on the planar (2D) orientational distributions of nematic polymers under an imposed shear flow of arbitrary strength. We extend previous analysis for persistence of equilibria in steady shear and for transitions to unsteady limit cycles, from closure models [21] to the Doi-Hess 2D kinetic equation. A variation on the Boltzmann distribution analysis of Constantin et al. [3, 4, 5] and others [8, 22, 23] for potential flow is developed to solve for all persistent steady equilibria, and characterize parameter boundaries where steady states cease to exist, which predicts the transition to tumbling limit cycles.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2009
Accession Number
ADA528069

Entities

People

  • Hong Zhou
  • Hongyun Wang
  • M. G. Forest

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Crystals
  • Equations
  • Flow
  • Liquid Crystal Polymers
  • Liquid Crystals
  • Materials
  • Mathematics
  • Monomolecular Films
  • Nonlinear Systems
  • Phase Diagrams
  • Phase Transformations
  • Polymers
  • Probability
  • Probability Density Functions
  • Shear Flow
  • Steady State
  • Two Dimensional

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Polymer Science and Technology