Experimental and numerical study of turbulent mixed convection in a cavity with an internal heat source

A. Piña-Ortiz, J. F. Hinojosa*, J. M.A. Navarro, J. Xamán

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, experimental and numerical results of heat transfer in a ventilated cavity with an internal heat source are presented. The cavity represents a ventilated room with a person inside in a 1:3 scale. It has a vertical wall receiving a constant and uniform heat flux, while the opposite wall is kept at a constant temperature. The rest of the walls is adiabatic. The cavity has multiple inlets and outlets of air, considering ventilation by ducts of an air-conditioning system. Experimental temperature profiles were obtained at six different depths and heights consisting of 14 thermocouples each. Six turbulence models were evaluated against experimental data. The minimum average percentage differences between numerical and experimental average Nusselt numbers of the hot wall and heat source were 12.9% and 4.1% with the renormalized k–ε turbulence model.

Original languageEnglish
Pages (from-to)142-172
Number of pages31
JournalJournal of Building Physics
Volume42
Issue number2
DOIs
StatePublished - 1 Sep 2018

Bibliographical note

Publisher Copyright:
© The Author(s) 2017.

Keywords

  • Ventilated cavity
  • internal heat source
  • turbulence models

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