Investigation of MHD natural convective nanofluid flow between horizontal parallel plates

The present study employs numerical analysis to examine the heat transfer and fluid flow properties of an ethylene glycolalumina nanofluid in the regenerative cooling phase of semi-cryogenic liquid rocket engines. The fourth-order Runge-Kutta method and the shooting method are used to numerically solve the partial differential equations for momentum and thermal energy, which are reduced to a set of ordinary differential equations. The analysis is done to look at how factors like Eckert number, viscosity variation, and nanoparticle volume percentage affect temperature profiles, skin friction coefficient, velocity distribution, and Nusselt number. By applying a transverse magnetic field, the model's practical application in terms of magneto-hydrodynamic effects has been accomplished, enabling the assessment of the influence of Lorentz forces on the hydrodynamic and thermal behaviour of the nanofluid. The findings show that adding alumina particles to ethylene glycol improves heat transfer efficiency. Temperature fields and flow behaviour can be controlled by applying a magnetic field. The results show that ethylene glycol-alumina nanofluids have a lot of potential to enhance regenerative cooling systems in effective rocket propulsion systems when exposed to MHD.