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Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity

A parametric study has been conducted to investigate particle deposition on solid surfaces during free convection flow in an internally heated and cooled square cavity filled with air. The cavity walls are insulated while several pairs of heaters and coolers (HACs) inside the cavity lead to free con...

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Main Authors:	Garoosi, F., Safaei, M.R., Dahari, M., Hooman, K.
Format:	Article
Language:	English
Published:	2015
Subjects:	T Technology (General) TJ Mechanical engineering and machinery
Online Access:	http://eprints.um.edu.my/13834/1/Eulerian-Lagrangian_analysis_of_solid_particle_distribution_in_an.pdf http://eprints.um.edu.my/13834/ http://www.sciencedirect.com/science/article/pii/S009630031401443X
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spelling	my.um.eprints.138342015-08-03T04:51:40Z http://eprints.um.edu.my/13834/ Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity Garoosi, F. Safaei, M.R. Dahari, M. Hooman, K. T Technology (General) TJ Mechanical engineering and machinery A parametric study has been conducted to investigate particle deposition on solid surfaces during free convection flow in an internally heated and cooled square cavity filled with air. The cavity walls are insulated while several pairs of heaters and coolers (HACs) inside the cavity lead to free convection flow. The HACs are assumed to be isothermal heat source and sinks with temperatures T-h and T-c (T-h > T-c). The problem is numerically investigated using the Eulerian-Lagrangian method. Two-dimensional Navier-Stokes and energy equations are solved using finite volume discretization method. Applying the Lagrangian approach, 5000 particles, distributed randomly in the enclosure, were tracked for 150 s. Effects of drag, lift, gravity, buoyancy, pressure gradient, shear stress terms, thermophoresis and Brownian forces on particles movements are considered. Furthermore, effects of various design parameters on the heat transfer rate and deposition of particles such as Rayleigh number (104 6 Ra 6 107) as well as orientation and number of the HACs are investigated. Our simulations indicate that thermophoretic force can significantly affect the distribution of particles of d(p) = 1 mu m diameter. It is also found that at low Rayleigh numbers the particle distribution is strongly non-uniform. Moreover, it was observed that by increasing number of the HACs and changing orientation of the HACs from vertical to horizontal, deposition rate of the solid particles increases significantly. (C) 2014 Elsevier Inc. All rights reserved. 2015-01-01 Article PeerReviewed application/pdf en http://eprints.um.edu.my/13834/1/Eulerian-Lagrangian_analysis_of_solid_particle_distribution_in_an.pdf Garoosi, F. and Safaei, M.R. and Dahari, M. and Hooman, K. (2015) Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity. Applied Mathematics and Computation, 250. pp. 28-46. ISSN 0096-3003 http://www.sciencedirect.com/science/article/pii/S009630031401443X DOI 10.1016/j.amc.2014.10.068
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
language	English
topic	T Technology (General) TJ Mechanical engineering and machinery
spellingShingle	T Technology (General) TJ Mechanical engineering and machinery Garoosi, F. Safaei, M.R. Dahari, M. Hooman, K. Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity
description	A parametric study has been conducted to investigate particle deposition on solid surfaces during free convection flow in an internally heated and cooled square cavity filled with air. The cavity walls are insulated while several pairs of heaters and coolers (HACs) inside the cavity lead to free convection flow. The HACs are assumed to be isothermal heat source and sinks with temperatures T-h and T-c (T-h > T-c). The problem is numerically investigated using the Eulerian-Lagrangian method. Two-dimensional Navier-Stokes and energy equations are solved using finite volume discretization method. Applying the Lagrangian approach, 5000 particles, distributed randomly in the enclosure, were tracked for 150 s. Effects of drag, lift, gravity, buoyancy, pressure gradient, shear stress terms, thermophoresis and Brownian forces on particles movements are considered. Furthermore, effects of various design parameters on the heat transfer rate and deposition of particles such as Rayleigh number (104 6 Ra 6 107) as well as orientation and number of the HACs are investigated. Our simulations indicate that thermophoretic force can significantly affect the distribution of particles of d(p) = 1 mu m diameter. It is also found that at low Rayleigh numbers the particle distribution is strongly non-uniform. Moreover, it was observed that by increasing number of the HACs and changing orientation of the HACs from vertical to horizontal, deposition rate of the solid particles increases significantly. (C) 2014 Elsevier Inc. All rights reserved.
format	Article
author	Garoosi, F. Safaei, M.R. Dahari, M. Hooman, K.
author_facet	Garoosi, F. Safaei, M.R. Dahari, M. Hooman, K.
author_sort	Garoosi, F.
title	Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity
title_short	Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity
title_full	Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity
title_fullStr	Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity
title_full_unstemmed	Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity
title_sort	eulerian-lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity
publishDate	2015
url	http://eprints.um.edu.my/13834/1/Eulerian-Lagrangian_analysis_of_solid_particle_distribution_in_an.pdf http://eprints.um.edu.my/13834/ http://www.sciencedirect.com/science/article/pii/S009630031401443X
_version_	1643689661546102784
score	13.211869

Eulerian-Lagrangian analysis of solid particle distribution in an internally heated and cooled air-filled cavity

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