Investigation of thermal behavior and performance of different microchannels: A case study for traditional and Manifold Microchannels

In this study, numerical investigation of forced convection of non-Newtonian nanofluid into Traditional Microchannel (TMC) and Manifold Microchannel (MMC) containing porous media is investigated. The bottom of the microchannel wall is kept at a constant temperature and the other walls are heat insulated. The inside of the microchannel is filled with porous media. This study addresses a new sample of microchannels (MMC and TMC) filled with porous material in a three-dimensional flow. The results show that increasing the Reynolds number and volume fraction of nanoparticles (φ) and decreasing the porosity, lead to heat transfer improvement. At low Reynolds numbers, there is no relative advantage over TMC or MMC. Finally, it is concluded that to achieve the acceptable performance evaluation criterion PEC (PEC> 1) at porosity ε= 0.9, thermal conductivity ratio (γ) must be γ