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Numerical study of natural convection heat transfer from an isothermal thin plate

DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.1150
11 pages

J. E. Jaramillo
Centre Tecnològic de Transfèrencia de Color (CTTC), Universitat Politecnica de Catalunya (UPC), c/Colom, 11, E-08222 Terrassa, Spain

Assensi Oliva
Centre Tecnologic de Transferencia de Calor (CTTC), Universitat Politecnica de Catalunya (UPC), Colom 11, 08222 Terrassa, Barcelona, Spain

C. D. Perez-Segarra
Heat and Mass Transfer Technological Center (CTTC) Universitat Politecnica de Catalunya - BarcelonaTech (UPC) Colom 11, 08222 Terrassa, Barcelona, Spain

M. Soria
Centre Tecnològic de Transferència de Calor (CTTC) ETSEIAT, c/ Colom 11, 08222 Terrassa, Spain

Аннотация

In this work detailed numerical simulations of natural convection heat transfer around an isothermal thin plate with different inclinations are carried out. The numerical approach is based on the finite volume technique for the study of air movement around the plate and its surroundings using symmetry-preserving formulation. To solve turbulence, Direct Numerical Simulation (DNS) or Large Eddy Simulation (LES) are selected. After verification of the numerical solutions and comparison of the results from different turbulence models, a data reduction of the numerical results is carried out in order to determine local and global heat transfer coefficients. Furthermore, the influence of Rayleigh number and plate inclination on flow characteristics and heat transfer coefficients is investigated.

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