Entropy generation due to natural convection cooling of a nanofluid

Mina Shahi; Amir Houshang Mahmoudi; Abbas Honarbakhsh Raouf

doi:10.1016/j.icheatmasstransfer.2011.04.008

Entropy generation due to natural convection cooling of a nanofluid

Mina Shahi^*, Amir Houshang Mahmoudi, Abbas Honarbakhsh Raouf

^*Corresponding author for this work

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

108 Citations (Scopus)

Abstract

In the present work, entropy generation due to natural convection of a nanofluid that consists of water and Cu in a cavity with a protruded heat source has been studied. To investigate both the First and the Second Law of Thermodynamics for this considered problem the numerical scheme carried out based on finite volume method with the SIMPLE algorithm for pressure-velocity coupling. In this study, the effect of Rayleigh number, solid concentration and heat source location on entropy generation have been revealed. Consequently the optimum case has been selected since the thermal system could have the least entropy generation and the best heat transfer rate. The results have shown the maximum value of Nusselt number and minimum entropy generation are obtained when heat source mountains in the bottom horizontal wall.

Original language	English
Pages (from-to)	972-983
Number of pages	12
Journal	International Communications in Heat and Mass Transfer
Volume	38
Issue number	7
DOIs	https://doi.org/10.1016/j.icheatmasstransfer.2011.04.008
Publication status	Published - Aug 2011
Externally published	Yes

Keywords

Entropy generation
Heat source
Nanofluid
Natural convection
Numerical study
Square cavity

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10.1016/j.icheatmasstransfer.2011.04.008

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title = "Entropy generation due to natural convection cooling of a nanofluid",

abstract = "In the present work, entropy generation due to natural convection of a nanofluid that consists of water and Cu in a cavity with a protruded heat source has been studied. To investigate both the First and the Second Law of Thermodynamics for this considered problem the numerical scheme carried out based on finite volume method with the SIMPLE algorithm for pressure-velocity coupling. In this study, the effect of Rayleigh number, solid concentration and heat source location on entropy generation have been revealed. Consequently the optimum case has been selected since the thermal system could have the least entropy generation and the best heat transfer rate. The results have shown the maximum value of Nusselt number and minimum entropy generation are obtained when heat source mountains in the bottom horizontal wall.",

keywords = "Entropy generation, Heat source, Nanofluid, Natural convection, Numerical study, Square cavity",

author = "Mina Shahi and Mahmoudi, {Amir Houshang} and Raouf, {Abbas Honarbakhsh}",

year = "2011",

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doi = "10.1016/j.icheatmasstransfer.2011.04.008",

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journal = "International Communications in Heat and Mass Transfer",

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T1 - Entropy generation due to natural convection cooling of a nanofluid

AU - Shahi, Mina

AU - Mahmoudi, Amir Houshang

AU - Raouf, Abbas Honarbakhsh

PY - 2011/8

Y1 - 2011/8

N2 - In the present work, entropy generation due to natural convection of a nanofluid that consists of water and Cu in a cavity with a protruded heat source has been studied. To investigate both the First and the Second Law of Thermodynamics for this considered problem the numerical scheme carried out based on finite volume method with the SIMPLE algorithm for pressure-velocity coupling. In this study, the effect of Rayleigh number, solid concentration and heat source location on entropy generation have been revealed. Consequently the optimum case has been selected since the thermal system could have the least entropy generation and the best heat transfer rate. The results have shown the maximum value of Nusselt number and minimum entropy generation are obtained when heat source mountains in the bottom horizontal wall.

AB - In the present work, entropy generation due to natural convection of a nanofluid that consists of water and Cu in a cavity with a protruded heat source has been studied. To investigate both the First and the Second Law of Thermodynamics for this considered problem the numerical scheme carried out based on finite volume method with the SIMPLE algorithm for pressure-velocity coupling. In this study, the effect of Rayleigh number, solid concentration and heat source location on entropy generation have been revealed. Consequently the optimum case has been selected since the thermal system could have the least entropy generation and the best heat transfer rate. The results have shown the maximum value of Nusselt number and minimum entropy generation are obtained when heat source mountains in the bottom horizontal wall.

KW - Entropy generation

KW - Heat source

KW - Nanofluid

KW - Natural convection

KW - Numerical study

KW - Square cavity

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EP - 983

JO - International Communications in Heat and Mass Transfer

JF - International Communications in Heat and Mass Transfer

IS - 7

ER -

Entropy generation due to natural convection cooling of a nanofluid

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Keywords

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