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The calculation of drag on nano-cylinders

F. Hafezi, R.S. Ransing, R.W. Lewis, Rajesh Ransing Orcid Logo

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

Swansea University Author: Rajesh Ransing Orcid Logo

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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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first_indexed 2016-12-08T20:59:06Z
last_indexed 2020-07-16T18:47:56Z
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spelling 2020-07-16T15:21:21.0593725 v2 31407 2016-12-08 The calculation of drag on nano-cylinders 0136f9a20abec3819b54088d9647c39f 0000-0003-4848-4545 Rajesh Ransing Rajesh Ransing true false 2016-12-08 MECH 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. Journal Article International Journal for Numerical Methods in Engineering 111 11 0029-5981 31 12 2016 2016-12-31 10.1002/nme.5489 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2020-07-16T15:21:21.0593725 2016-12-08T15:08:19.1852766 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering F. Hafezi 1 R.S. Ransing 2 R.W. Lewis 3 Rajesh Ransing 0000-0003-4848-4545 4 0031407-18122016172609.pdf The_calculation_of_drag_on_nano_cyclinders.pdf 2016-12-18T17:26:09.8570000 Output 1716165 application/pdf Accepted Manuscript true 2017-12-13T00:00:00.0000000 true
title The calculation of drag on nano-cylinders
spellingShingle The calculation of drag on nano-cylinders
Rajesh Ransing
title_short The calculation of drag on nano-cylinders
title_full The calculation of drag on nano-cylinders
title_fullStr The calculation of drag on nano-cylinders
title_full_unstemmed The calculation of drag on nano-cylinders
title_sort The calculation of drag on nano-cylinders
author_id_str_mv 0136f9a20abec3819b54088d9647c39f
author_id_fullname_str_mv 0136f9a20abec3819b54088d9647c39f_***_Rajesh Ransing
author Rajesh Ransing
author2 F. Hafezi
R.S. Ransing
R.W. Lewis
Rajesh Ransing
format Journal article
container_title International Journal for Numerical Methods in Engineering
container_volume 111
container_issue 11
publishDate 2016
institution Swansea University
issn 0029-5981
doi_str_mv 10.1002/nme.5489
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description 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.
published_date 2016-12-31T03:38:22Z
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score 11.014224

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