A computational note on thermal attributes of engine oil with titanium alloy and zinc oxide hybrid nanoparticles flowing over a stretching surface about a stagnation point

In this research article, we intend to perform a numerical investigation of the thermal features of MHD Williamson hybrid nanofluid flow over a linearly stretching surface with viscous dissipation and nonlinear thermal radiation effects. An external magnetic field exists in the vicinity of stagnation point along with the creation of induced magnetic field due conducting fluid. A thin film of viscous and incompressible base fluid, engine oil \((EO)\) $(EO)$ , encumbered with titanium alloy \((Ti_{6} Al_{4} V)\) $(T{i}_{6}A{l}_{4}V)$ and zinc oxide \((ZnO)\) $(ZnO)$ nanoparticles is examined taking pure nanofluid and hybrid nanofluid cases simultaneously in a single frame in Cartesian coordinates. The governing equations are first transformed to ordinary differential equations employing similarity transformations and then simulated by successive over-relaxation method. Approximate solutions are assessed through graphs for velocity, temperature and induced magnetism corresponding to the prominent parameters. A significant improvement in wear resistance, lubrication and thermal features of the engine oil has been observed due to titanium alloy and zinc oxide hybrid nanocomposite.