CONSTRUCTAL DESIGN APPLIED TO IMPROVE THE HEAT REMOVAL BY CONVECTION OF FINNED ASSEMBLIES WITH TRIANGULAR SHAPE
Eduardo Xavier Barreto1; Carlos Eduardo Guex Falcão1; Emanuel da Silva Diaz Estrada2; Elizaldo Domingues dos Santos2; Igor de Borba Mallmann1; Luiz Alberto Oliveira Rocha3
1 Universidade Federal de Santa Maria; 2 Universidade Federal de Rio Grande; 3 Universidade Federal do Rio Grande do Sul
doi:10.20906/CPS/CILAMCE2017-0196
Resumo
This numerical study applies Constructal Design to find the shape of a finned assembly that provides the most effective heat removal by means of convection. Here a triangular heat generating medium is cooled by three finned assemblies with 3, 5 and 7 number of triangular fins. Both, the assembly of fins and the heat-generating medium, are made of cooper and the numerical solution assumes a perfect thermal contact between them. In order to find the configuration that reduces most the overall thermal resistance of the whole system a numerical code based on finite elements and developed in MATLAB environment is used to solve the temperature field in the domain for all geometrical configurations studied. In this context, the area of the heat-generating medium and the total area of the system, as well as the thermal conductivities are kept constant.
Palavras-chave: Constructal Design; Convection; Finned assemblies; Heat removal; Overall thermal resistance