Critical conductivity ratio and wall thickness for conjugate natural convection heat transfer in vertical eccentric annuli

A. Jamal; M. A.I. El-Shaarawi; E. M.A. Mokheimer

doi:10.1080/10407782.2011.572760

Critical conductivity ratio and wall thickness for conjugate natural convection heat transfer in vertical eccentric annuli

A. Jamal^*, M. A.I. El-Shaarawi, E. M.A. Mokheimer

^*Corresponding author for this work

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

4 Scopus citations

Abstract

Combined conduction-free convection heat transfer in vertical eccentric annuli is numerically investigated using a finite-difference technique. The effects of geometrical parameters, such as eccentricity and radius ratio, on very practical parameters known as critical values of conductivity ratio above which and wall thickness below which the conjugate effect can be neglected, are presented. Solid-fluid thermal conductivity ratio is varied over a range covering practical cases with commonly encountered wall thicknesses. The obtained results can be of value in many industrial applications. The numerical results show that conjugate effects can be increased or decreased by controlling the geometrical parameters.

Original language	English
Pages (from-to)	719-737
Number of pages	19
Journal	Numerical Heat Transfer; Part A: Applications
Volume	59
Issue number	9
DOIs	https://doi.org/10.1080/10407782.2011.572760
State	Published - Jan 2011

Bibliographical note

Funding Information:
Received 19 November 2010; accepted 24 February 2011. The support from King Fahd University of Petroleum and Minerals to complete this investigation is gratefully acknowledged. Address correspondence to A. Jamal, Department of Mechanical Engineering, McGill University, 5280 Rue Dudemaine, Apt. 7, Montreal, H4J1P1, Canada. E-mail: [email protected]

ASJC Scopus subject areas

Numerical Analysis
Condensed Matter Physics

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10.1080/10407782.2011.572760

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title = "Critical conductivity ratio and wall thickness for conjugate natural convection heat transfer in vertical eccentric annuli",

abstract = "Combined conduction-free convection heat transfer in vertical eccentric annuli is numerically investigated using a finite-difference technique. The effects of geometrical parameters, such as eccentricity and radius ratio, on very practical parameters known as critical values of conductivity ratio above which and wall thickness below which the conjugate effect can be neglected, are presented. Solid-fluid thermal conductivity ratio is varied over a range covering practical cases with commonly encountered wall thicknesses. The obtained results can be of value in many industrial applications. The numerical results show that conjugate effects can be increased or decreased by controlling the geometrical parameters.",

author = "A. Jamal and El-Shaarawi, \{M. A.I.\} and Mokheimer, \{E. M.A.\}",

note = "Funding Information: Received 19 November 2010; accepted 24 February 2011. The support from King Fahd University of Petroleum and Minerals to complete this investigation is gratefully acknowledged. Address correspondence to A. Jamal, Department of Mechanical Engineering, McGill University, 5280 Rue Dudemaine, Apt. 7, Montreal, H4J1P1, Canada. E-mail: [email protected]",

year = "2011",

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doi = "10.1080/10407782.2011.572760",

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AU - Jamal, A.

AU - El-Shaarawi, M. A.I.

AU - Mokheimer, E. M.A.

N1 - Funding Information: Received 19 November 2010; accepted 24 February 2011. The support from King Fahd University of Petroleum and Minerals to complete this investigation is gratefully acknowledged. Address correspondence to A. Jamal, Department of Mechanical Engineering, McGill University, 5280 Rue Dudemaine, Apt. 7, Montreal, H4J1P1, Canada. E-mail: [email protected]

PY - 2011/1

Y1 - 2011/1

N2 - Combined conduction-free convection heat transfer in vertical eccentric annuli is numerically investigated using a finite-difference technique. The effects of geometrical parameters, such as eccentricity and radius ratio, on very practical parameters known as critical values of conductivity ratio above which and wall thickness below which the conjugate effect can be neglected, are presented. Solid-fluid thermal conductivity ratio is varied over a range covering practical cases with commonly encountered wall thicknesses. The obtained results can be of value in many industrial applications. The numerical results show that conjugate effects can be increased or decreased by controlling the geometrical parameters.

AB - Combined conduction-free convection heat transfer in vertical eccentric annuli is numerically investigated using a finite-difference technique. The effects of geometrical parameters, such as eccentricity and radius ratio, on very practical parameters known as critical values of conductivity ratio above which and wall thickness below which the conjugate effect can be neglected, are presented. Solid-fluid thermal conductivity ratio is varied over a range covering practical cases with commonly encountered wall thicknesses. The obtained results can be of value in many industrial applications. The numerical results show that conjugate effects can be increased or decreased by controlling the geometrical parameters.

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JO - Numerical Heat Transfer; Part A: Applications

JF - Numerical Heat Transfer; Part A: Applications

IS - 9

ER -

Critical conductivity ratio and wall thickness for conjugate natural convection heat transfer in vertical eccentric annuli

Abstract

Bibliographical note

ASJC Scopus subject areas

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