TY - GEN

T1 - Numerical simulation of heat losses by natural convection and surface thermal radiation in an open tilted shallow cavity

AU - F. Hinojosa, Jesús

AU - Alvarez, Gabriela S.

AU - Estrada, Claudio A.

AU - Cabanillas, Rafael E.

PY - 2005

Y1 - 2005

N2 - In this paper we present the numerical calculations of heat transfer by natural convection and surface radiation in a tilted open cavity. The cavity holds the opposite wall to the aperture at a constant temperature of 500 K, while the surrounding fluid interacting with the aperture is at 300 K. The most important assumptions in the mathematical formulation are three, the flow is laminar, the fluid is radiatively non-participating and the Boussinesq approximation is valid. The conservation equations in primitive variables are solved in a transient form 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 fixed Rayleigh number of 107, inclination angles from 45° to 180° and aspect rations from 1 to 4.

AB - In this paper we present the numerical calculations of heat transfer by natural convection and surface radiation in a tilted open cavity. The cavity holds the opposite wall to the aperture at a constant temperature of 500 K, while the surrounding fluid interacting with the aperture is at 300 K. The most important assumptions in the mathematical formulation are three, the flow is laminar, the fluid is radiatively non-participating and the Boussinesq approximation is valid. The conservation equations in primitive variables are solved in a transient form 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 fixed Rayleigh number of 107, inclination angles from 45° to 180° and aspect rations from 1 to 4.

KW - Natural convection

KW - Open cavities

KW - Surface thermal radiation

UR - http://www.scopus.com/inward/record.url?scp=84870503736&partnerID=8YFLogxK

M3 - Contribución a la conferencia

AN - SCOPUS:84870503736

SN - 9781622762637

T3 - Proceedings 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

SP - 886

EP - 891

BT - Proceedings of the Solar World Congress 2005

T2 - Solar World Congress 2005: Bringing Water to the World, Including 34th ASES Annual Conference and 30th National Passive Solar Conference

Y2 - 6 August 2005 through 12 August 2005

ER -