The mechanics of clearance in a non-Newtonian lubrication layer

Research output: Contribution to journalArticle

Abstract

This paper investigates the mechanics of clearance of an embedded particle in a lubrication layer of viscoelastic fluid. We show theoretically that in a slider bearing domain containing a viscoelastic fluid, the oscillating shearing motion of a wall aids in transporting away any embedded particle towards the moving boundary. The impact of geometry and material properties of the fluid layer are explored by coupling theoretical and numerical methods. Our approach suggests a possible mechanism by which the human eye could clear out any debris beneath the eyelid, under responsive blinking. Our simplified analysis brings to bear interesting approaches from physics and engineering upon a very complex biological problem and could provide essential clues about the physiological design of the tear film.

Original languageEnglish
Pages (from-to)133-145
Number of pages13
JournalInternational Journal of Non-Linear Mechanics
Volume86
DOIs
StatePublished - 1 Nov 2016

Fingerprint

Lubrication
Viscoelastic Fluid
Clearance
Mechanics
Fluids
Moving Boundary
Bearings (structural)
Material Properties
Numerical Methods
Physics
Engineering
Shearing
Debris
Fluid
Motion
Numerical methods
Materials properties
Geometry
Human
Design

Keywords

  • Clearance
  • Fluid–solid interaction
  • Lubrication

Cite this

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title = "The mechanics of clearance in a non-Newtonian lubrication layer",
abstract = "This paper investigates the mechanics of clearance of an embedded particle in a lubrication layer of viscoelastic fluid. We show theoretically that in a slider bearing domain containing a viscoelastic fluid, the oscillating shearing motion of a wall aids in transporting away any embedded particle towards the moving boundary. The impact of geometry and material properties of the fluid layer are explored by coupling theoretical and numerical methods. Our approach suggests a possible mechanism by which the human eye could clear out any debris beneath the eyelid, under responsive blinking. Our simplified analysis brings to bear interesting approaches from physics and engineering upon a very complex biological problem and could provide essential clues about the physiological design of the tear film.",
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The mechanics of clearance in a non-Newtonian lubrication layer. / Chung, Bong Jae; Platt, Douglas; Vaidya, Ashuwin.

In: International Journal of Non-Linear Mechanics, Vol. 86, 01.11.2016, p. 133-145.

Research output: Contribution to journalArticle

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