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

Garoosi, Faroogh; Safaei, Mohammad Reza; Dahari, Mahidzal; Hooman, Kamel

doi:10.1016/j.amc.2014.10.068

Cited by 27 publications

(6 citation statements)

References 32 publications

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“…In the last decade, many researchers have simulated the heat removal mechanism by means of natural convection in a heat exchanger containing several hot and cold pipes. Dai et al [2], Garoosi et al [3], Gap et al [4] and Wang et al [5] studied free convection heat transfer between hot and cold micro-tubes in a heat exchanger. Their results indicated that, the maximum heat transfer performance can be achieved when the hot tubes are located lower than the cold ones.…”

Section: Introductionmentioning

confidence: 99%

Two phase flow simulation of conjugate natural convection of the nanofluid in a partitioned heat exchanger containing several conducting obstacles

Garoosi

Rashidi

2017

International Journal of Mechanical Sciences

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Link to publication on Research at Birmingham portal General rightsUnless a licence is specified above, all rights (including copyright and moral rights) in this document are retained by the authors and/or the copyright holders. The express permission of the copyright holder must be obtained for any use of this material other than for purposes permitted by law.• Users may freely distribute the URL that is used to identify this publication.• Users may download and/or print one copy of the publication from the University of Birmingham research portal for the purpose of private study or non-commercial research.• User may use extracts from the document in line with the concept of 'fair dealing' under the Copyright, Designs and Patents Act 1988 (?) • Users may not further distribute the material nor use it for the purposes of commercial gain.Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document.When citing, please reference the published version. Take down policyWhile the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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Section: Introductionmentioning

confidence: 99%

Two phase flow simulation of conjugate natural convection of the nanofluid in a partitioned heat exchanger containing several conducting obstacles

Garoosi

Rashidi

2017

International Journal of Mechanical Sciences

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“…21,22 Thus, many researchers have adopted computational fluid dynamics combined with the Eulerian-Lagrangian method to study the motion of particles. [23][24][25][26][27][28] To study the motion and sedimentation trajectory of particles, Lu, Zhang and Zhao used the Lagrangian method to track and analyse the particle trajectories, and these studies had provided successful prediction of the particle dynamics and their indoor dispersion. 29,30 Compared with the isothermal flow, when there is a large temperature gradient field in the room (such as an industrial heat source), particles' movement can be affected by the thermal plume.…”

Section: Introductionmentioning

confidence: 99%

Diffusion characteristics of the industrial submicron particle under Brownian motion and turbulent diffusion

Wang

Yu³

et al. 2021

Indoor and Built Environment

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The industrial release of submicron aerosol particles at workplace could cause undue health effect on workers. To effectively capture and remove airborne particles, we need to study the characteristics of various interactive particle motion forces (drag force, Brownian force, Saffman lift force, etc.) and the dispersion of these aerosol particles in indoor air. In this study, the dominant force of submicron particles was determined by calculating the acting forces with different particle sizes. Then, a Discrete Particle Model (DPM) was used to calculate the trajectory of particle movement in turbulent thermal plume flow. Horizontal dispersity ( DH) was defined to evaluate the horizontal diffusion of the particulate matter. The impact of different particle diameters, heat source temperatures and initial relative velocities on DH was investigated. This study showed that the main acting forces for submicron aerosol particles were drag force, Brownian force, Saffman lift force and thermophoresis force. Brownian force cannot be ignored when the particle diameter was below 0.3 µm, which would promote the irregular movement of particles in space and enhance their diffusion ability. The smaller the particle size, the higher the heat source temperature and the lower the particles' initial velocity would lead to the increase of DH.

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“…There are many published works about heat transfer and flow mechanisms, which are significant knowledge, for the heat exchangers and engineering devices [1][2][3][4][5][6][7][8][9]. The examples for the heat transfer improvement in various types of the heat exchangers with passive techniques of both numerical and experimental investigations are as follows.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Potentiality and Flow Behavior in a Square Duct Fitted with Double-Inclined Baffles: A Numerical Analysis

Boonloi

Jedsadaratanachai

2021

Modelling and Simulation in Engineering

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Numerical analysis of heat transfer mechanisms and flow topologies for the heat exchanger square channel (HESC) installed with the double-inclined baffles (DIB) is reported. The main objective of the present research is to study the influences of DIB height to duct height ( b / H = 0.05 – 0.30 ), DIB distance to duct height ( P / H = 1 – 1.5 ), and flow attack angle ( α = 30 ° and 45 ° ) on the flow topologies, heat transfer features, and thermal performances. The Reynolds numbers (based on the entry HESC around 100–2000) are analyzed for the present problem. The numerical models of the HESC installed with the DIB are solved with finite volume method (commercial code). The simulated results of the HESC installed with the DIB are reported in forms of flow topologies and heat transfer characteristics. The Nusselt numbers (Nu), friction factors ( f ), and thermal enhancement factors (TEF) of the HESC placed with the DIB are offered. As the numerical results, it is seen that the DIB produces the vortex streams and impinging streams in all cases. The vortex streams and impinging streams disturb the thermal boundary layer on the HESC walls that is a key motive for the growth of heat transfer rate. The best TEF of the HESC installed with the DIB is about 3.87 at P / H = 1 , α = 30 ° , Re = 2000 , and b / H = 0.15 . Additionally, the TEF contours, which help to design the HESC inserted with the DIB, are performed.

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

Cited by 27 publications

References 32 publications

Two phase flow simulation of conjugate natural convection of the nanofluid in a partitioned heat exchanger containing several conducting obstacles

Two phase flow simulation of conjugate natural convection of the nanofluid in a partitioned heat exchanger containing several conducting obstacles

Diffusion characteristics of the industrial submicron particle under Brownian motion and turbulent diffusion

Heat Transfer Potentiality and Flow Behavior in a Square Duct Fitted with Double-Inclined Baffles: A Numerical Analysis

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