Performance Improvement of a Double-Layer Microchannel Heat Sink via Novel Fin Geometry—A Numerical Study

This study proposes a novel design having dense fins with lesser thickness at the upper layer and comparatively spare greater in lower to further improve overall thermal performance of double-layer microchannel heat sink. The can effectively direct more low temperature fluid flow toward transfer while sparse fin structure ease pressure drop penalty. At same time, thicker ensure higher efficiency facilitate high transfer. Parametric detailed analysis is conducted for proposed sink comparison traditional one. After optimization, resistance pumping power found be reduced by 9.42% when compared Yet Reynolds number, Nusselt number exceeds value 13%.