Laminar natural convection of cold water enclosed in a horizontal annulus with mixed boundary conditions

Ching-Jenq Ho; Y. H. Lin

doi:10.1016/0017-9310(88)90121-4

Laminar natural convection of cold water enclosed in a horizontal annulus with mixed boundary conditions

Ching-Jenq Ho, Y. H. Lin

Department of Mechanical Engineering

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

4 Citations (Scopus)

Abstract

A computational analysis of steady laminar natural convection of cold water within a horizontal annulus with constant heat flux on the inner wall and a fixed temperature on the outer surface has been undertaken to explore the occurrence of density inversion of water and its effects on the flow and temperature fields. Results are generated for three values of radius ratio over various ranges of the modified Rayleigh number and density inversion parameter. For the flow circumstances considered, the occurrence of density inversion is found to be mainly dependent on the density inversion parameter. With a negative inversion parameter, the increase of either the modified Rayleigh number or the radius ratio results in a more pronounced effect of density inversion on the flow and temperature fields in the annulus.

Original language	English
Pages (from-to)	2113-2121
Number of pages	9
Journal	International Journal of Heat and Mass Transfer
Volume	31
Issue number	10
DOIs	https://doi.org/10.1016/0017-9310(88)90121-4
Publication status	Published - 1988 Jan 1

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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AB - A computational analysis of steady laminar natural convection of cold water within a horizontal annulus with constant heat flux on the inner wall and a fixed temperature on the outer surface has been undertaken to explore the occurrence of density inversion of water and its effects on the flow and temperature fields. Results are generated for three values of radius ratio over various ranges of the modified Rayleigh number and density inversion parameter. For the flow circumstances considered, the occurrence of density inversion is found to be mainly dependent on the density inversion parameter. With a negative inversion parameter, the increase of either the modified Rayleigh number or the radius ratio results in a more pronounced effect of density inversion on the flow and temperature fields in the annulus.

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Laminar natural convection of cold water enclosed in a horizontal annulus with mixed boundary conditions

Abstract

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