Role of gradients and vortexes on suitable location of discrete heat sources on a sinusoidal-wall microchannel

The idea of using the compact device with higher heat transfer potential has encouraged researchers to use microchannels. Creating sinusoidal walls is a technique leading better effectiveness and smaller size. In this study, effects discrete sources location on pressure drop are investigated, graphene nanoplatelets/water inside microchannel. For this, installed in smooth microchannel (layout A) compared two sinusoidal-wall layouts B C, heating above convergent/diverging sections, respectively. Since velocity temperature gradients converging region, exchange for layout greater than other ones. words, installing these regions high-temperature gradient more obvious positive efficacy exchange. best (B), although base (A) 37.5% higher, entropy generation by 79% 35.2%, By introducing new figure merit (FOM), it found that desirable zone.