# NUMERICAL STUDY OF CONJUGATE NATURAL CONVECTION OVER VERTICAL FLAT PLATE WITH PROTRUDING HEAT SOURCES

## Palavras-chave:

conjugate natural convection, protruding elements, numerical simulation## Resumo

The paper presents a numerical simulation of conjugate natural-convection heat transfer from

protruding heat sources in a flat plat mounted vertically. This problem arises as a typical concern of

designing electronic systems that involves buoyance-driven flows above heat sources modules. The

main objective is to apply a methodology to validate numerical results for vertical position using a bi-

dimensional, steady state, finite-volume method and to obtain dynamic and thermal fields. The plate

contains seven elements uniformly distributed at the upper surface and an insulation layer at the bottom

guaranteeing convection mechanism in only one side of the sources. Fluid physical properties are

assumed uniform except for the buoyancy terms, which are obtained from the Boussinesq approximation

of Navier-Stokes equations. Heat conduction in the plate is accounted in addition to convection and

radiation in order to evaluate heat transfer mechanisms and non-dimensional parameters. Three different

power inputs were simulated and evaluated using temperature distributions and Nu distribution around

the sources