Nanofluid flow through microchannel with a triangular corrugated wall: Heat transfer enhancement against entropy generation intensification

In the present study, the effects of applying magnetic field on heat transfer and entropy generation of a nanofluid through microchannel with a triangular corrugated wall were examined. Considering the slip velocity, the effects of Reynolds and Hartmann numbers on the Nusselt and Bejan numbers have been studied. The positive effect of installing triangular ribs is increase in the heat transfer area, but the negative effect corresponds to vortex formation at high Reynolds. Applying magnetic field diminished the vortex intensity which in turn improved the heat transfer by 25%, and the simultaneously intensified the entropy generation by 328%. The results affirmed that slip coefficient growth from 0 to 0.1 could simultaneously improve the heat transfer and reduce the entropy generation by 13%.