Natural convection in a rectangular cavity with partially active side walls

N. Nithyadevi, P. Kandaswamy, J. Lee

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

A numerical study is performed to investigate the effect of aspect ratio on the natural convection of a fluid contained in a rectangular cavity with partially thermally active side walls. The active part of the left side wall is at a higher temperature than that of the right side wall. The top and bottom of the cavity and inactive part of the side walls are thermally insulated. Nine different relative positions of the active zones are considered. The equations are discretized by the control volume method with power law scheme and are solved numerically by iterative method together with a successive over relaxation (SOR) technique. The results are obtained for Grashof numbers between 103 and 105 and the effects of the aspect ratio on the flow and temperature fields and the rate of heat transfer from the walls of the enclosure are presented. The heat transfer rate is high for the bottom-top thermally active location while the heat transfer rate is poor in the top-bottom thermally active location. The heat transfer rate is found to increase with an increase in the aspect ratio.

Original languageEnglish
Pages (from-to)4688-4697
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Volume50
Issue number23-24
DOIs
Publication statusPublished - 2007 Nov 1

Fingerprint

Natural convection
free convection
Heat transfer
Aspect ratio
cavities
heat transfer
aspect ratio
Grashof number
Iterative methods
Enclosures
Flow fields
enclosure
Temperature distribution
flow distribution
temperature distribution
Fluids
fluids
Temperature

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes
  • Energy(all)
  • Mechanical Engineering

Cite this

@article{2bbefb6721ba4b3a92e347bb6d293126,
title = "Natural convection in a rectangular cavity with partially active side walls",
abstract = "A numerical study is performed to investigate the effect of aspect ratio on the natural convection of a fluid contained in a rectangular cavity with partially thermally active side walls. The active part of the left side wall is at a higher temperature than that of the right side wall. The top and bottom of the cavity and inactive part of the side walls are thermally insulated. Nine different relative positions of the active zones are considered. The equations are discretized by the control volume method with power law scheme and are solved numerically by iterative method together with a successive over relaxation (SOR) technique. The results are obtained for Grashof numbers between 103 and 105 and the effects of the aspect ratio on the flow and temperature fields and the rate of heat transfer from the walls of the enclosure are presented. The heat transfer rate is high for the bottom-top thermally active location while the heat transfer rate is poor in the top-bottom thermally active location. The heat transfer rate is found to increase with an increase in the aspect ratio.",
author = "N. Nithyadevi and P. Kandaswamy and J. Lee",
year = "2007",
month = "11",
day = "1",
doi = "10.1016/j.ijheatmasstransfer.2007.03.050",
language = "English",
volume = "50",
pages = "4688--4697",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",
number = "23-24",

}

Natural convection in a rectangular cavity with partially active side walls. / Nithyadevi, N.; Kandaswamy, P.; Lee, J.

In: International Journal of Heat and Mass Transfer, Vol. 50, No. 23-24, 01.11.2007, p. 4688-4697.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Natural convection in a rectangular cavity with partially active side walls

AU - Nithyadevi, N.

AU - Kandaswamy, P.

AU - Lee, J.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - A numerical study is performed to investigate the effect of aspect ratio on the natural convection of a fluid contained in a rectangular cavity with partially thermally active side walls. The active part of the left side wall is at a higher temperature than that of the right side wall. The top and bottom of the cavity and inactive part of the side walls are thermally insulated. Nine different relative positions of the active zones are considered. The equations are discretized by the control volume method with power law scheme and are solved numerically by iterative method together with a successive over relaxation (SOR) technique. The results are obtained for Grashof numbers between 103 and 105 and the effects of the aspect ratio on the flow and temperature fields and the rate of heat transfer from the walls of the enclosure are presented. The heat transfer rate is high for the bottom-top thermally active location while the heat transfer rate is poor in the top-bottom thermally active location. The heat transfer rate is found to increase with an increase in the aspect ratio.

AB - A numerical study is performed to investigate the effect of aspect ratio on the natural convection of a fluid contained in a rectangular cavity with partially thermally active side walls. The active part of the left side wall is at a higher temperature than that of the right side wall. The top and bottom of the cavity and inactive part of the side walls are thermally insulated. Nine different relative positions of the active zones are considered. The equations are discretized by the control volume method with power law scheme and are solved numerically by iterative method together with a successive over relaxation (SOR) technique. The results are obtained for Grashof numbers between 103 and 105 and the effects of the aspect ratio on the flow and temperature fields and the rate of heat transfer from the walls of the enclosure are presented. The heat transfer rate is high for the bottom-top thermally active location while the heat transfer rate is poor in the top-bottom thermally active location. The heat transfer rate is found to increase with an increase in the aspect ratio.

UR - http://www.scopus.com/inward/record.url?scp=34748860582&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34748860582&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2007.03.050

DO - 10.1016/j.ijheatmasstransfer.2007.03.050

M3 - Article

VL - 50

SP - 4688

EP - 4697

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

IS - 23-24

ER -