Conjugate natural convection heat transfer in a rotating enclosure

H. Saleh, Ishak Hashim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The aim of the present numerical study to analyze the conjugate natural convection heat transfer in a rotating enclosure with finite wall thickness. The enclosure executes a steady counterclockwise an- gular velocity about its longitudinal axis. The staggered grid arrangement together with the Marker and Cell (MAC) method was employed to solve the governing equations. The governing parameters considered are the wall thickness, 0:05 ≤ D ≤ 0:2, the conductivity ratio, 0:5 ≤ Kr ≤ 10 and the Taylor number, 8:9×104 ≤ Ta ≤ 1:1×106, and the centrifugal force is assumed weaker than the Coriolis force. It is found that decreasing the conductivity ratio or/and rotational speed stabilize of the convective flow and heat transfer oscillation. The global quantity of the heat transfer rate increases by increasing the conductivity ratio and it decreases about 12% by increasing 20% wall thickness for the considered rotational speeds.

Original languageEnglish
Pages (from-to)945-955
Number of pages11
JournalJournal of Applied Fluid Mechanics
Volume9
Issue number2
Publication statusPublished - 2016

Fingerprint

enclosure
Enclosures
Natural convection
free convection
heat transfer
Heat transfer
conductivity
Coriolis force
centrifugal force
convective flow
Angular velocity
angular velocity
markers
grids
oscillations
cells

Keywords

  • Conjugate heat transfer
  • Finite difference method
  • Rotating enclosure

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics

Cite this

Conjugate natural convection heat transfer in a rotating enclosure. / Saleh, H.; Hashim, Ishak.

In: Journal of Applied Fluid Mechanics, Vol. 9, No. 2, 2016, p. 945-955.

Research output: Contribution to journalArticle

@article{356d272250e94a8f802dbd1612e1f4a4,
title = "Conjugate natural convection heat transfer in a rotating enclosure",
abstract = "The aim of the present numerical study to analyze the conjugate natural convection heat transfer in a rotating enclosure with finite wall thickness. The enclosure executes a steady counterclockwise an- gular velocity about its longitudinal axis. The staggered grid arrangement together with the Marker and Cell (MAC) method was employed to solve the governing equations. The governing parameters considered are the wall thickness, 0:05 ≤ D ≤ 0:2, the conductivity ratio, 0:5 ≤ Kr ≤ 10 and the Taylor number, 8:9×104 ≤ Ta ≤ 1:1×106, and the centrifugal force is assumed weaker than the Coriolis force. It is found that decreasing the conductivity ratio or/and rotational speed stabilize of the convective flow and heat transfer oscillation. The global quantity of the heat transfer rate increases by increasing the conductivity ratio and it decreases about 12{\%} by increasing 20{\%} wall thickness for the considered rotational speeds.",
keywords = "Conjugate heat transfer, Finite difference method, Rotating enclosure",
author = "H. Saleh and Ishak Hashim",
year = "2016",
language = "English",
volume = "9",
pages = "945--955",
journal = "Journal of Applied Fluid Mechanics",
issn = "1735-3572",
publisher = "Isfahan University of Technology",
number = "2",

}

TY - JOUR

T1 - Conjugate natural convection heat transfer in a rotating enclosure

AU - Saleh, H.

AU - Hashim, Ishak

PY - 2016

Y1 - 2016

N2 - The aim of the present numerical study to analyze the conjugate natural convection heat transfer in a rotating enclosure with finite wall thickness. The enclosure executes a steady counterclockwise an- gular velocity about its longitudinal axis. The staggered grid arrangement together with the Marker and Cell (MAC) method was employed to solve the governing equations. The governing parameters considered are the wall thickness, 0:05 ≤ D ≤ 0:2, the conductivity ratio, 0:5 ≤ Kr ≤ 10 and the Taylor number, 8:9×104 ≤ Ta ≤ 1:1×106, and the centrifugal force is assumed weaker than the Coriolis force. It is found that decreasing the conductivity ratio or/and rotational speed stabilize of the convective flow and heat transfer oscillation. The global quantity of the heat transfer rate increases by increasing the conductivity ratio and it decreases about 12% by increasing 20% wall thickness for the considered rotational speeds.

AB - The aim of the present numerical study to analyze the conjugate natural convection heat transfer in a rotating enclosure with finite wall thickness. The enclosure executes a steady counterclockwise an- gular velocity about its longitudinal axis. The staggered grid arrangement together with the Marker and Cell (MAC) method was employed to solve the governing equations. The governing parameters considered are the wall thickness, 0:05 ≤ D ≤ 0:2, the conductivity ratio, 0:5 ≤ Kr ≤ 10 and the Taylor number, 8:9×104 ≤ Ta ≤ 1:1×106, and the centrifugal force is assumed weaker than the Coriolis force. It is found that decreasing the conductivity ratio or/and rotational speed stabilize of the convective flow and heat transfer oscillation. The global quantity of the heat transfer rate increases by increasing the conductivity ratio and it decreases about 12% by increasing 20% wall thickness for the considered rotational speeds.

KW - Conjugate heat transfer

KW - Finite difference method

KW - Rotating enclosure

UR - http://www.scopus.com/inward/record.url?scp=84958824798&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84958824798&partnerID=8YFLogxK

M3 - Article

VL - 9

SP - 945

EP - 955

JO - Journal of Applied Fluid Mechanics

JF - Journal of Applied Fluid Mechanics

SN - 1735-3572

IS - 2

ER -