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32105

The Effect of Wall Shear Stress and Viscous Heating on Nanoscale Flow

Article

Last updated: 22 Jan 2023

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Abstract

The effect of wall shear stress and viscous heating on nano scale flow properties and boundary conditions is presented. Molecular dynamics (MD) simulations is implemented to handle nano scale force-driven Poiseuille flow bounded by two parallel planner plates with liquid Argon subjected to wide range of wall shear stress. The excessive generated viscous heating is removed via adaptive thermal interacting wall model leading to nearly constant mean fluid temperature. The predicted results showed the classification of controlled and uncontrolled temperature flow mode (CTFM, UTFM) related to the capability of adjusting mean fluid temperature up to wall shear stress limit (WSSL). The relevant change of temperature profile and depletion layer thickness that depend on the applied wall shear stress is noticeable. It is clear that the change of depletion layer thickness influences the effective channel height and the average density. It is noticed the implementation of density and temperature on the change of fluid pressure in both CTFM and UTFM. Owing to the significant increase in pressure and temperature beyond WSSL, a supercritical fluid state is noticeable. The slip length and the fluid inhomogeneity are reported to be strongly dependent on the applied wall shear stress.

DOI

10.21608/pserj.2018.32105

Keywords

Molecular dynamics simulations, Viscous heating, Force-driven liquid argon flow, Fluid inhomogeneity, slip flow, Stick flow, Slip length

Authors

First Name

Mohamed

Last Name

Elsabahy

MiddleName

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Affiliation

Demonstrator of Mechanical power Eng., Faculty of Eng., Suez Canal University.

Email

mohamed_elsabahy@eng.suez.edu.eg

City

-

Orcid

-

First Name

Ahmed

Last Name

Abdelhameed

MiddleName

Sharaf

Affiliation

Prof. of Mechanical power Eng., Faculty of Eng., Port Said

Email

sh_ahmed99@yahoo.com

City

-

Orcid

-

First Name

Yassen

Last Name

Yassen

MiddleName

El-Sayed

Affiliation

Dr. of Mechanical power Eng., Faculty of Eng., Port Said University

Email

y_yassen70@yahoo.com

City

-

Orcid

-

Volume

22

Article Issue

2

Related Issue

5397

Issue Date

2018-09-01

Receive Date

2018-08-01

Publish Date

2018-09-01

Page Start

71

Page End

84

Print ISSN

1110-6603

Online ISSN

2536-9377

Link

https://pserj.journals.ekb.eg/article_32105.html

Detail API

https://pserj.journals.ekb.eg/service?article_code=32105

Order

9

Type

Original Article

Type Code

813

Publication Type

Journal

Publication Title

Port-Said Engineering Research Journal

Publication Link

https://pserj.journals.ekb.eg/

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Details

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Article

Created At

22 Jan 2023