Numerical simulation for activation energy impact in Darcy–Forchheimer nanofluid flow by impermeable cylinder with thermal radiation

Here, the mixed convection and activation energy characteristics in Darcy–Forchheimer nanomaterial flow by impermeable cylinder are addressed. The novel chemical species model which elaborates activation energy impact is introduced. Formulation is based on significant slip mechanisms, namely the Brownian and thermophoretic diffusions. Besides, thermal radiation, double stratification, heat generation and convective conditions are also taken into account. The formulated expressions are converted into non-dimensional quantities. Shooting scheme is opted to tackle governing nonlinear mathematical problems. Plots and tabular results are presented regarding the importance of physical constraints. It is found that the inertia coefficient and porosity variable yield lower velocity. Also, temperature and Sherwood number are increasing functions of activation energy factor.