Numerical investigation of fluid flow and heat transfer in rough microchannel

In this study an incompressible 2-D Navier Stokes solver is used to study the effects of surface roughness in microchannel flows numerically. An internally roughened microchannel is generated by selecting a set of triangular shaped peak as roughness with different range from 0.00 % to 8%. Water is t...

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Main Author:	Abdollahi, Ayoub
Format:	Thesis
Published:	2013
Subjects:	TJ Mechanical engineering and machinery
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id	my-utm-ep.41922
record_format	uketd_dc
spelling	my-utm-ep.419222020-07-12T03:28:11Z Numerical investigation of fluid flow and heat transfer in rough microchannel 2013 Abdollahi, Ayoub TJ Mechanical engineering and machinery In this study an incompressible 2-D Navier Stokes solver is used to study the effects of surface roughness in microchannel flows numerically. An internally roughened microchannel is generated by selecting a set of triangular shaped peak as roughness with different range from 0.00 % to 8%. Water is taken as working fluid with constant properties. A two dimensional rough rectangular microchannel is modelled by GAMBIT. For specific boundary condition, the geometry is solved in the Computational Fluid Dynamics, CFD software namely FLUENT. Besides SIMPLE method in FLUENT is used for solving the governing equations. This work focused on the effect of surface roughness on pressure drop and heat transfer behaviour in the microchannel. It was obtained that surface roughness and Reynolds number have an important role on friction factor, Poiseuille number and heat transfer. Poiseuille number and friction factor increased significantly by enhancing relative roughness. Besides, the laminar heat transfer in microchannels is also enhanced by roughness increases. Moreover, the roughness has significant effects on performances of microchannel. 2013 Thesis http://eprints.utm.my/id/eprint/41922/ http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:73521?queryType=vitalDismax&query=Numerical+investigation+of+fluid+flow+and+heat+transfer&public=true masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Abdollahi, Ayoub Numerical investigation of fluid flow and heat transfer in rough microchannel
description	In this study an incompressible 2-D Navier Stokes solver is used to study the effects of surface roughness in microchannel flows numerically. An internally roughened microchannel is generated by selecting a set of triangular shaped peak as roughness with different range from 0.00 % to 8%. Water is taken as working fluid with constant properties. A two dimensional rough rectangular microchannel is modelled by GAMBIT. For specific boundary condition, the geometry is solved in the Computational Fluid Dynamics, CFD software namely FLUENT. Besides SIMPLE method in FLUENT is used for solving the governing equations. This work focused on the effect of surface roughness on pressure drop and heat transfer behaviour in the microchannel. It was obtained that surface roughness and Reynolds number have an important role on friction factor, Poiseuille number and heat transfer. Poiseuille number and friction factor increased significantly by enhancing relative roughness. Besides, the laminar heat transfer in microchannels is also enhanced by roughness increases. Moreover, the roughness has significant effects on performances of microchannel.
format	Thesis
qualification_level	Master's degree
author	Abdollahi, Ayoub
author_facet	Abdollahi, Ayoub
author_sort	Abdollahi, Ayoub
title	Numerical investigation of fluid flow and heat transfer in rough microchannel
title_short	Numerical investigation of fluid flow and heat transfer in rough microchannel
title_full	Numerical investigation of fluid flow and heat transfer in rough microchannel
title_fullStr	Numerical investigation of fluid flow and heat transfer in rough microchannel
title_full_unstemmed	Numerical investigation of fluid flow and heat transfer in rough microchannel
title_sort	numerical investigation of fluid flow and heat transfer in rough microchannel
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2013
_version_	1747816649668427776

Numerical investigation of fluid flow and heat transfer in rough microchannel

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