Analysis of Turbulent Free Convection in Enclosure with Conductive Partitions

  • Khudheyer S.Mushatat Mech. Eng. Dept. College of Engineering Thi-Qar University
  • Rafid M. Hannun Mech. Eng. Dept. College of Engineering Thi-Qar University
  • Qais A. Rishack Mech. Eng. Dept. College of Engineering Basra University
  • Mushtaq I Hasan Mech. Eng. Dept. College of Engineering Thi-Qar University
Keywords: turbulent natural convection, partitions, enclosure

Abstract

A numerical method is presented to investigate the turbulent free convection
inside an enclosure with partitions. The conductive partitions were located at the bottom wall.
The Navier-Stokes and energy equations besides to the kinetic and dissipation equations were
discretized by using a finite volume method. The solution of these equations was made via
constructing a Fortran 90 computer program. The turbulence in the flow was modeled by
using a k-ε model. The obtained results show that the conductive partitions represented a key
factor for enhancing the rate of heat transfer. Also the results showed that the partitions height
has more effect on enhancing the rate of heat transfer compared with the partitions thickness.
The height of partitions were ranged from 0.25≤ h ≤ 0.65 and the width from 0.07 ≤ w ≤ 0.13.
The enclosure was partially heated and the range of the considered values of Rayleigh number
was up to 10
14
. The maximum rate of heat transfer is enhanced by 35% with increasing
partitions height up to h= 0.65.

Published
2019-05-04
Section
Articles