The effect of step height of microscale backward-facing step on mixed convection nanofluid flow and heat transfer characteristics

A. Sh Kherbeet; H. A. Mohammed; K. M. Munisamy; B. H. Salman

doi:10.1016/j.ijheatmasstransfer.2013.09.050

The effect of step height of microscale backward-facing step on mixed convection nanofluid flow and heat transfer characteristics

A. Sh Kherbeet^*, H. A. Mohammed, K. M. Munisamy, B. H. Salman

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

75 Scopus citations

Abstract

Simulation of laminar mixed convective flow over a 3-D horizontal microscale backward-Facing step (MBFS) is presented to explore the effect of step height on the flow and heat transfer characteristics. The momentum and energy equations were discretized by means of a finite volume method (FVM). The SIMPLE algorithm scheme was used to link the pressure and velocity fields in the entire domain. Three values of step height were considered S = 350 μm, S = 450 μm and S = 550 μm. EG-SiO₂ nanofluid was considered as the working fluid with 25 nm nanoparticle diameter, 0.04 volume fraction. The results revealed that the Nusselt number and skin friction coefficient increase with the increase of the step height. The Reynolds number and pressure drop were found to decrease with the increase of the step height.

Original language	English
Pages (from-to)	554-566
Number of pages	13
Journal	International Journal of Heat and Mass Transfer
Volume	68
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2013.09.050
State	Published - 2014
Externally published	Yes

Keywords

Heat transfer
Microscale backward-facing step
Mixed convection
Nanofluids

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/j.ijheatmasstransfer.2013.09.050

Cite this

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title = "The effect of step height of microscale backward-facing step on mixed convection nanofluid flow and heat transfer characteristics",

abstract = "Simulation of laminar mixed convective flow over a 3-D horizontal microscale backward-Facing step (MBFS) is presented to explore the effect of step height on the flow and heat transfer characteristics. The momentum and energy equations were discretized by means of a finite volume method (FVM). The SIMPLE algorithm scheme was used to link the pressure and velocity fields in the entire domain. Three values of step height were considered S = 350 μm, S = 450 μm and S = 550 μm. EG-SiO2 nanofluid was considered as the working fluid with 25 nm nanoparticle diameter, 0.04 volume fraction. The results revealed that the Nusselt number and skin friction coefficient increase with the increase of the step height. The Reynolds number and pressure drop were found to decrease with the increase of the step height.",

keywords = "Heat transfer, Microscale backward-facing step, Mixed convection, Nanofluids",

author = "Kherbeet, {A. Sh} and Mohammed, {H. A.} and Munisamy, {K. M.} and Salman, {B. H.}",

year = "2014",

doi = "10.1016/j.ijheatmasstransfer.2013.09.050",

language = "English",

volume = "68",

pages = "554--566",

journal = "International Journal of Heat and Mass Transfer",

issn = "0017-9310",

}

TY - JOUR

T1 - The effect of step height of microscale backward-facing step on mixed convection nanofluid flow and heat transfer characteristics

AU - Kherbeet, A. Sh

AU - Mohammed, H. A.

AU - Munisamy, K. M.

AU - Salman, B. H.

PY - 2014

Y1 - 2014

N2 - Simulation of laminar mixed convective flow over a 3-D horizontal microscale backward-Facing step (MBFS) is presented to explore the effect of step height on the flow and heat transfer characteristics. The momentum and energy equations were discretized by means of a finite volume method (FVM). The SIMPLE algorithm scheme was used to link the pressure and velocity fields in the entire domain. Three values of step height were considered S = 350 μm, S = 450 μm and S = 550 μm. EG-SiO2 nanofluid was considered as the working fluid with 25 nm nanoparticle diameter, 0.04 volume fraction. The results revealed that the Nusselt number and skin friction coefficient increase with the increase of the step height. The Reynolds number and pressure drop were found to decrease with the increase of the step height.

AB - Simulation of laminar mixed convective flow over a 3-D horizontal microscale backward-Facing step (MBFS) is presented to explore the effect of step height on the flow and heat transfer characteristics. The momentum and energy equations were discretized by means of a finite volume method (FVM). The SIMPLE algorithm scheme was used to link the pressure and velocity fields in the entire domain. Three values of step height were considered S = 350 μm, S = 450 μm and S = 550 μm. EG-SiO2 nanofluid was considered as the working fluid with 25 nm nanoparticle diameter, 0.04 volume fraction. The results revealed that the Nusselt number and skin friction coefficient increase with the increase of the step height. The Reynolds number and pressure drop were found to decrease with the increase of the step height.

KW - Heat transfer

KW - Microscale backward-facing step

KW - Mixed convection

KW - Nanofluids

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U2 - 10.1016/j.ijheatmasstransfer.2013.09.050

DO - 10.1016/j.ijheatmasstransfer.2013.09.050

M3 - Article

AN - SCOPUS:84886561336

SN - 0017-9310

VL - 68

SP - 554

EP - 566

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -

The effect of step height of microscale backward-facing step on mixed convection nanofluid flow and heat transfer characteristics

Abstract

Keywords

ASJC Scopus subject areas

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