Analysis of Dissipative Particle Dynamics Fluid in Sheared Regimes

Abouzar Moshfegh; Ahmad Jabbarzadeh; Roger I. Tanner

doi:10.4028/www.scientific.net/AMM.553.115

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 553Analysis of Dissipative Particle Dynamics Fluid in...

Analysis of Dissipative Particle Dynamics Fluid in Sheared Regimes

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.

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Periodical:

Applied Mechanics and Materials (Volume 553)

Pages:

115-120

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.553.115

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Online since:

May 2014

Authors:

Abouzar Moshfegh, Ahmad Jabbarzadeh*, Roger I. Tanner

Keywords:

Couette Flow, DPD Simulation, Dynamic Viscosity, Rheology, Soft Particle

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