Towards a novel EMHD dissipative stagnation point flow model for radiating copper-based ethylene glycol nanofluids: An unsteady two-dimensional homogeneous second-grade flow case study

A novel EMHD dissipative second-grade nanofluid flow model is proposed exclusively in this numerical inspection for radiating copper-based ethylene glycol nanofluids to reveal the dynamical and thermal aspects of the studied homogeneous mixture during its unsteady twodimensional stagnation point flow towards a horizontal electromagnetic actuator. Based on admissible physical assumptions and authenticated experimental correlations, the governing PDEs and BCs are derived appropriately for the nanofluid flow problem under consideration. After numerous rearrangements and non-dimensionalization treatments, the resulting ODEs and BCs are handled computationally with the help of a robust GDQ algorithm under the parametric control of several influencing factors, whose strengthening magnitudes affect probably the flow control process and heat transport mechanism. In this context, it proved graphically that the nanoparticles' loading process exhibits dissimilar dynamical and thermal impacts as compared with the influences of the nanoparticles' diameter size. Besides, the resistive dynamical effect of the utilized electromagnetic actuator reinforces thermally the enhancing role of the thermal radiative heat flux and Joule's heating process within the nanofluidic medium.

Automated summary

A novel electromagnetic hydromagnetic dissipative second-grade nanofluid flow model is proposed to study the dynamics and thermodynamics behavior of copper-based ethylene glycol nanofluids under the influence of a horizontal electromagnetic actuator. The governing partial differential equations and boundary conditions are derived based on physical assumptions and experimental correlations. A robust generalized differential quadrature algorithm is used to solve the resulting ordinary differential equations and boundary conditions, and the influence of various factors on the flow control process and heat transport mechanism is investigated. The graphical results show that the loading process of nanoparticles has different dynamic and thermal impacts compared to the nanoparticles' diameter size, and the resistive dynamical effect of the electromagnetic actuator enhances the role of thermal radiative heat flux and Joule's heating process in the nanofluidic medium.