Experimental and Numerical Study of a Ventilated Room with Located Heat Sources

J. F. Hinojosa*, D. A. Orozco, J. Xaman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This study reports a numerical-experimental analysis of turbulent mixed convection in a ventilated room with located heat sources. The ventilated room is modeled as a cavity. The effect of thermal convection due to the located heat sources on opposite walls of the cavity is analyzed. A parametric study was performed in a ventilated cubic cavity to consider different values of heat flux supplied by heat sources, along with two configurations for ventilation and two air inlet velocities. Five Reynolds averaged Navier-Stokes (RANS) turbulence models [standard k-ϵ, realizable k-ϵ, renormalization group (RNG) k-ϵ, standard k-ω, and shear-stress k-ω] were compared with experimental temperature profiles and heat transfer coefficients. With the validated model, the effect of heat sources on temperature fields, velocity vectors, and heat transfer convective coefficients is presented and discussed. RNG k-ϵ turbulence model has the lowest average percentage differences between the experimental data and the numerical profiles with 9%. The average Nusselt numbers for heat source 1 (SH1) are between 53.72 and 182.72, while for heat source 2 (SH2), they are between 106.36 and 162.29.

Original languageEnglish
Article number04020024
JournalJournal of Energy Engineering
Volume146
Issue number4
DOIs
StatePublished - 1 Aug 2020

Bibliographical note

Funding Information:
The authors are grateful to the National Council of Science and Technology (CONACYT) and to the University of Sonora (UNISON) for the support provided for the realization of this work.

Publisher Copyright:
© 2020 American Society of Civil Engineers.

Keywords

  • Located heat sources
  • Mixed convection
  • Turbulence models

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