Numerical simulation of heat losses by natural convection in an open tilted cubic cavity

Gabriela S. Alvarez*, Jesús F. Hinojosa, Claudio A. Estrada

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work the numeric results, of the heat transfer by natural convection in a tilted open cubic cavity are presented. The most important assumptions in the mathematical formulation are two, the flow is laminar and the Boussinesq approximation is valid. The conservation equations in primitive variables are solved using the finite volume method and the SIMPLEC algorithm. The advective terms are approximated by the SMART scheme and the diffusive terms are approximated using the central differencing scheme. The results in the steady state are obtained for a Rayleigh range from 104 to 107 and for a range 0°-180° of the inclination angles of the cavity. The convective Nusselt number changes substantially with the inclination angle of the cavity. The numerical model predicts Nusselt number oscillations for low angles and relative high Rayleigh numbers (105-107).

Original languageEnglish
Title of host publicationProceedings of the Solar World Congress 2005
Subtitle of host publicationBringing Water to the World, Including Proceedings of 34th ASES Annual Conference and Proceedings of 30th National Passive Solar Conference
Pages892-897
Number of pages6
StatePublished - 2005
EventSolar World Congress 2005: Bringing Water to the World, Including 34th ASES Annual Conference and 30th National Passive Solar Conference - Orlando, FL, United States
Duration: 6 Aug 200512 Aug 2005

Publication series

NameProceedings of the Solar World Congress 2005: Bringing Water to the World, Including Proceedings of 34th ASES Annual Conference and Proceedings of 30th National Passive Solar Conference
Volume2

Conference

ConferenceSolar World Congress 2005: Bringing Water to the World, Including 34th ASES Annual Conference and 30th National Passive Solar Conference
Country/TerritoryUnited States
CityOrlando, FL
Period6/08/0512/08/05

Keywords

  • Natural convection
  • Open cavities
  • Three dimensional numerical simulation

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