Effects of dual stratification on thermo-chemically radiative tangent hyperbolic nanofluid flow over an inclined stretching sheet

Abstract

The present work investigates the significant influence of dual stratification and mixed convection on the dynamics of a thermo-chemically radiative tangent hyperbolic nanofluid (THNF) with heat absorption/generation over a magnetised, exponentially stretched inclined sheet. The compatible similarities are hosted on flow governing equations to generate a system of non-linear equations involving ordinary derivatives, solved via classical Keller box, and novel shifted Chebyshev collocation techniques. The reliability of methodologies is guaranteed by comparing the outcomes with prior published results. The graphical results illustrate the characteristics of velocity, temperature, and concentration profiles under several flow factors. Numerical results show that the skin friction coefficient decreases by 20.19 %, 10.86 %, and 12.54 % with an increment in power law index (0–2), angle of inclination (30° to 60°), and buoyancy parameter (0.5–1.5), except for the magnetic parameter. The Nusselt number increases by 83.92 % as the Prandtl number increases (2–3), while the Sherwood number declines by 14.02 %. A stronger chemical reaction parameter (0.1–0.5) enhances the Sherwood number by 3.43 % but reduces Nusselt number. Velocity profiles increase with inclination angle and mixed convection factor. Temperature profiles increase with higher Brownian motion, heat generation/absorption, and thermal radiation. Concentration profiles decline with a higher chemical reaction factor and Schmidt number. To measure the computational accuracy and reliability of the derived solutions, a comparative analysis of convergence through error metric among the techniques is performed. Error analysis confirms 26 to 36 series terms are necessary to achieve the optimal spectral accuracy. The current work stands out due to its unique combination of thermal radiation, chemical reaction, heat absorption and dual stratification in THNF over an inclined exponentially stretched sheet.