Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights

Flow-through mini channels have received tremendous interest from researchers over a long period. However, the study of flow between the channel and on top of the channel has received little to no attention. In the present paper, different parameters have been used to investigate this heat enhanceme...

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Autores principales:	Zainab Al Hajaj, Mohamad Ziad Saghir
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Brownian motion thermophoretic effect two-phase flow nanofluid channels Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/dc4b7a4c0c6144e59bc197c7aebe75e2
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spelling	oai:doaj.org-article:dc4b7a4c0c6144e59bc197c7aebe75e22021-11-25T18:50:54ZBrownian Motion and Thermophoretic Effects in Mini Channels with Various Heights10.3390/pr91119652227-9717https://doaj.org/article/dc4b7a4c0c6144e59bc197c7aebe75e22021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1965https://doaj.org/toc/2227-9717Flow-through mini channels have received tremendous interest from researchers over a long period. However, the study of flow between the channel and on top of the channel has received little to no attention. In the present paper, different parameters have been used to investigate this heat enhancement. The height of 10 mini channels has been varied, allowing the corresponding aspect ratio to vary from 3 to 6, 9, and 12. When the aspect ratio is 12, flow circulates through the mini channel only, and when the aspect ratio is less than 12, flow is distributed between the one circulating inside the channel and moving on top of the channel. Different flow rates are studied corresponding to a Reynolds number varying from 250 to 1250 if water is the working fluid. Brownian and thermophoresis effects are taken into consideration to investigate the nanoparticle sedimentation. Results revealed that the optimum configuration, if one needs to take into consideration the friction factor, is 12. If one ignores the pressure drops, then the optimum configuration is when the aspect ratio is equal to 6. This means that the flow interaction between the one circulating in the channel and above the channel plays a major effect in heat removal.Zainab Al HajajMohamad Ziad SaghirMDPI AGarticleBrownian motionthermophoretic effecttwo-phase flownanofluidchannelsChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1965, p 1965 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Brownian motion thermophoretic effect two-phase flow nanofluid channels Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	Brownian motion thermophoretic effect two-phase flow nanofluid channels Chemical technology TP1-1185 Chemistry QD1-999 Zainab Al Hajaj Mohamad Ziad Saghir Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights
description	Flow-through mini channels have received tremendous interest from researchers over a long period. However, the study of flow between the channel and on top of the channel has received little to no attention. In the present paper, different parameters have been used to investigate this heat enhancement. The height of 10 mini channels has been varied, allowing the corresponding aspect ratio to vary from 3 to 6, 9, and 12. When the aspect ratio is 12, flow circulates through the mini channel only, and when the aspect ratio is less than 12, flow is distributed between the one circulating inside the channel and moving on top of the channel. Different flow rates are studied corresponding to a Reynolds number varying from 250 to 1250 if water is the working fluid. Brownian and thermophoresis effects are taken into consideration to investigate the nanoparticle sedimentation. Results revealed that the optimum configuration, if one needs to take into consideration the friction factor, is 12. If one ignores the pressure drops, then the optimum configuration is when the aspect ratio is equal to 6. This means that the flow interaction between the one circulating in the channel and above the channel plays a major effect in heat removal.
format	article
author	Zainab Al Hajaj Mohamad Ziad Saghir
author_facet	Zainab Al Hajaj Mohamad Ziad Saghir
author_sort	Zainab Al Hajaj
title	Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights
title_short	Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights
title_full	Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights
title_fullStr	Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights
title_full_unstemmed	Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights
title_sort	brownian motion and thermophoretic effects in mini channels with various heights
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/dc4b7a4c0c6144e59bc197c7aebe75e2
work_keys_str_mv	AT zainabalhajaj brownianmotionandthermophoreticeffectsinminichannelswithvariousheights AT mohamadziadsaghir brownianmotionandthermophoreticeffectsinminichannelswithvariousheights
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Brownian Motion and Thermophoretic Effects in Mini Channels with Various Heights

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