Abstract
The presence of micro-elements inside a complex fluidic medium (e.g., bubbly liquids, some lubricants, synovial fluids, certain man-made liquids, physiological fluids, polymeric suspensions, muddy fluids, blood liquids, and granular fluids) can change completely the rheological behavior of the resulting mixture according to the micropolar constitutive laws by providing a substantial inertial effect with an increase in the effective viscosity of the medium due to the micro-rotational impact of these micro-species. Motivating by the practical uses of the micropolar theory (e.g., blood rheology, ferrofluids, nanofluids, microfluidics, and liquid crystals), the present examination aimed to explore the main consequences arising from the convective motion of a bi-phasic mixture near a linearly stretching sheet for a micropolar nanofluidic medium including 60% of ethylene glycol, 40% of pure water, and a certain volume fraction of alumina nanoparticles. To achieve those main objectives, rigorous physical theories and assumptions are adopted in this respect to state properly the leading conservation equa-tions based on the passive control approach of Buongiorno's model. By applying distinctive amendments, the governing boundary layer equations are transformed into a system of ordinary differential equations, which are solved numerically by a GDQLLM procedure for realistic boundary conditions. Moreover, the flow pattern and heat transfer appearances are revealed accordingly via multiple portrays, whose results are discussed compre-hensively for various emerging parameters. Among the main interesting findings, it is found that the mass loading of alumina nanoparticles provides a significant thermal enhancement, speeds up its motion, and in-creases the coefficients of skin-friction and couple-stress at the stretching sheet. However, a dual behavior is noticed in the micro-rotation velocity profile against the increasing values of the volume fraction of nanoparticles