Cattaneo-Christov-based study of SWCNT-MWCNT/EG Casson hybrid nanofluid flow past a lubricated surface with entropy generation

A simplified mathematical model is described in the current analysis to review the Casson hybrid nanofluid through a lubricated surface near a stagnation point. For lubrication needs, a shear-thinning (power-law) fluid is used. The interfacial conditions are created by implementing the continuity of velocity and shear stress of Casson and power-law fluids. Similar solutions are achieved by setting the index of power-law as 0.5. Moreover, the entropy of the system is calculated through the second law of thermodynamics. For achieve the numerical solutions, the finite difference method is employed. Results are exhibited for ordinary SWCNT-EG and hybrid SWCNT-MWCNT/EG nanofluids. The velocity profile diminishes while temperature distribution enhances with higher the value of Casson parameter. Further, the entropy generation enhances with solid volume fraction.