Trapezoidal grooves were arranged in channel sidewalls of the proposed
microchannel heat sinks to enhance heat transfer for cooling microelectronic
systems. Three-dimensional numerical simulations were carried out to
investigate the characteristics of fluid flow and heat transfer in the
proposed microchannels. Field structures of thermal fluid flow, Nusselt
number (Nu) and friction factor (f) were employed to study the effects of
the relative groove depth (?) and relative grooves spacing length (?) of
trapezoidal grooves on the thermal and hydraulic performance of the proposed
microchannels. The results showed that the proposed microchannel presented
better flow and thermal performance than the smooth straight one for Re
<597.74 with f/f0<1 and for Re >149.44 with Nu/Nu0>1, respectively. The
thermal enhancement factor (?) was achieved up to 1.197 with ?=0.4 and ?=1
for Re=714.18. Furthermore, the relative groove depth had much more
significant influence on the overall performance than the relative groove
spacing length.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.