Comparative analysis of the hydrothermal features of TiO₂ water and ethylene glycol-based nanofluid transportation over a radially stretchable disk

This study focuses on the comprehensive analysis of the thermal characterization of an electrically conducting nanofluid flow containing TiO2 nanoparticles dissolved in two different common liquids (H2O and C2H6O2) and contained within a continuously extending disk. The heat and concentration formulation are modified by incorporating the standard interpretations of the Joule heating, energy source, dissipation, and modified activation energy with binary chemical reactions. The Darcy–Forchheimer addition is used to highlight the significance of porous media. The Brownian dispersion’s effects are clearly discernible in the current investigation. Furthermore, as a novelty, special thermophysical models of viscosity and thermal conductivity are included. The obtained differential formulations are tackled through the analytical procedure HAM. The veracity of the finding is verified through a numerical scheme (ND-solve technique). Using several graphs and charts, the perception trends of model factors are evaluated. The influence of Cfz, Nuz, and Shz are estimated based on flow characteristics. The F′(ζ) curve pattern for both nanofluids is declined by the increasing magnitude of M, ϕ, βp*, and Fr*, while thermal profile. The drag force and heat transmission rate are shown to optimize with M as well as ϕ in the pictorial simulations produced from the existing model. The Φ(ζ) can also be strengthened by the presence of a high degree Nb. The outcomes are validated by previous studies and a good degree of consistency is revealed.