Title: Optimal design with EGM approach in conjugate natural convection with surface radiation in a two-dimensional enclosure,
Abstract: Analysis of conjugate natural convection with surface radiation in a
two-dimensional enclosure is carried out in order to search the optimal
location of the heat source with entropy generation minimization (EGM) approach
and conventional heat transfer parameters. The air as an incompressible fluid
and transparent media is considered the fluid filling the enclosure with the
steady and laminar regime. The enclosure internal surfaces are also gray,
opaque and diffuse. The governing equations with stream function and vorticity
formulation are solved using finite difference approach. Results include the
effect of Rayleigh number and emissivity on the dimensionless average rate of
entropy generation and its optimum location. The optimum location search with
conventional heat transfer parameters including maximum temperature and Nusselt
numbers are also examined.