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The calculation of drag on nano-cylinders / Rajesh, Ransing

International Journal for Numerical Methods in Engineering, Volume: 111, Issue: 11

Swansea University Author: Rajesh, Ransing

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DOI (Published version): 10.1002/nme.5489

Abstract

A novel formulation, based on the molecular dynamics approach, has been proposed to calculate localised drag forces over nano-cylinders. The computational evidence suggests that the existing methods underestimate drag coefficients at nano-scales at least by 20-40%. These coefficients are also up to...

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Published in: International Journal for Numerical Methods in Engineering
ISSN: 0029-5981
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa31407
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Abstract: A novel formulation, based on the molecular dynamics approach, has been proposed to calculate localised drag forces over nano-cylinders. The computational evidence suggests that the existing methods underestimate drag coefficients at nano-scales at least by 20-40%. These coefficients are also up to seven times higher than the ones calculated by continuum based analytical solutions. The deviation increases at Reynolds number values less than one. The proposed formulation describes a new method for calculating localised values for both the kinetic and configurational parts of the Irwin-Kirkwood stress tensor at given fixed positions within the computational domain.
College: College of Engineering
Issue: 11