This study presents a comprehensive numerical investigation of the flow and heat transfer characteristics of a second-grade nanofluid in a converging/diverging channel, incorporating the significant effects of multiple slip mechanisms. The analysis considers velocity, thermal, and solutal slip conditions at the channel walls, providing a more realistic model of nanofluid behavior in micro-environments or with specific surface interactions. The governing equations, derived from the principles of conservation of mass, momentum, and energy, are formulated using a non-Newtonian second-grade fluid model to account for viscoelastic effects, combined with the Buongiorno model to capture the Brownia... More >