Second law analysis of fully developed laminar flow for rectangular ducts with semicircular ends

Hakan F. Öztop; Ihsan Daǧtekin; Ahmet Z. Şahin

doi:10.1016/j.icheatmasstransfer.2009.03.021

Second law analysis of fully developed laminar flow for rectangular ducts with semicircular ends

Hakan F. Öztop, Ihsan Daǧtekin^*, Ahmet Z. Şahin

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

Second law analysis is performed analytically for rectangular ducts with semicircular ends in laminar flow. Two different situations are considered for the analysis. In the first case, boundaries of duct are considered in constant wall temperature. In the second case, constant wall heat flux boundary conditions applied. Entropy generation is obtained for various cross sectional areas, various wall heat flux and Reynolds numbers. It is found that with the increasing aspect ratio (β) values for both constant wall temperature (CWT) and constant heat flux (CHF) total entropy generation increases, however, required pumping power also increases.

Original language	English
Pages (from-to)	725-730
Number of pages	6
Journal	International Communications in Heat and Mass Transfer
Volume	36
Issue number	7
DOIs	https://doi.org/10.1016/j.icheatmasstransfer.2009.03.021
Publication status	Published - Aug 2009
Externally published	Yes

Keywords

Constant heat flux
Duct
Entropy
Laminar flow

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10.1016/j.icheatmasstransfer.2009.03.021

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title = "Second law analysis of fully developed laminar flow for rectangular ducts with semicircular ends",

abstract = "Second law analysis is performed analytically for rectangular ducts with semicircular ends in laminar flow. Two different situations are considered for the analysis. In the first case, boundaries of duct are considered in constant wall temperature. In the second case, constant wall heat flux boundary conditions applied. Entropy generation is obtained for various cross sectional areas, various wall heat flux and Reynolds numbers. It is found that with the increasing aspect ratio (β) values for both constant wall temperature (CWT) and constant heat flux (CHF) total entropy generation increases, however, required pumping power also increases.",

keywords = "Constant heat flux, Duct, Entropy, Laminar flow",

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year = "2009",

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

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T1 - Second law analysis of fully developed laminar flow for rectangular ducts with semicircular ends

AU - Öztop, Hakan F.

AU - Daǧtekin, Ihsan

AU - Şahin, Ahmet Z.

PY - 2009/8

Y1 - 2009/8

N2 - Second law analysis is performed analytically for rectangular ducts with semicircular ends in laminar flow. Two different situations are considered for the analysis. In the first case, boundaries of duct are considered in constant wall temperature. In the second case, constant wall heat flux boundary conditions applied. Entropy generation is obtained for various cross sectional areas, various wall heat flux and Reynolds numbers. It is found that with the increasing aspect ratio (β) values for both constant wall temperature (CWT) and constant heat flux (CHF) total entropy generation increases, however, required pumping power also increases.

AB - Second law analysis is performed analytically for rectangular ducts with semicircular ends in laminar flow. Two different situations are considered for the analysis. In the first case, boundaries of duct are considered in constant wall temperature. In the second case, constant wall heat flux boundary conditions applied. Entropy generation is obtained for various cross sectional areas, various wall heat flux and Reynolds numbers. It is found that with the increasing aspect ratio (β) values for both constant wall temperature (CWT) and constant heat flux (CHF) total entropy generation increases, however, required pumping power also increases.

KW - Constant heat flux

KW - Duct

KW - Entropy

KW - Laminar flow

UR - https://www.scopus.com/pages/publications/67649094089

U2 - 10.1016/j.icheatmasstransfer.2009.03.021

DO - 10.1016/j.icheatmasstransfer.2009.03.021

M3 - Article

AN - SCOPUS:67649094089

SN - 0735-1933

VL - 36

SP - 725

EP - 730

JO - International Communications in Heat and Mass Transfer

JF - International Communications in Heat and Mass Transfer

IS - 7

ER -

Second law analysis of fully developed laminar flow for rectangular ducts with semicircular ends

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Keywords

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