Analysis of dissipative particle dynamics fluid in sheared regimes

Abouzar Moshfegh, Ahmad Jabbarzadeh, Roger I. Tanner

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The present Dissipative Particles Dynamics (DPD) simulation study aims at extracting some correlations between velocity and temperature profiles, and dynamic viscosity with externally applied shear velocity via Lees-Edwards boundary condition. System physical and rheological behaviours are studied under changes made to shear velocity, cutoff radii and weight function exponent in the definition of conservative, dissipative and random forces. Two cutoff radii are altered up to the level where system of particles shows anomalous behaviour. Radial distribution function and temperature (T) are invoked to rule out invalid cutoff radii combinations. Calculated viscosity in a range of weight functions exponents (S) is compared against theory in a variety of shear velocities, where reasonable agreement with respect to T control is achieved.
Original languageEnglish
Pages (from-to)115-120
Number of pages6
JournalApplied Mechanics and Materials
Volume553
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • soft particle
  • DPD simulation
  • rheology
  • Couette flow
  • dynamic viscosity

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