ISSN Online: 2377-424X
International Heat Transfer Conference 12
Conjugate heat transfer from a substrate-mounted protruding heat source in air-cooled vertical channels
Résumé
The problem numerically investigated is that of steady, two-dimensional laminar natural convection between two
vertical rectangular plates with a protruding heated module mounted mid-height on a substrate of finite
thickness. A parametric study was conducted to investigate the effects of variations of the thermal conductivity
and thickness of the substrate, and the width of the module. It is shown that it is relevant to couple heat
conduction within the substrate and natural convection inside the channel. The use of isothermal or isoflux
boundary condition at the channel surface (i.e., neglecting the substrate thickness) was indeed shown to be
inadequate. A variation in the substrate conductivity affects not only the maximum module temperature but also
alters considerably the flow behavior.