Dynamics of different heat sources and activation energy on the hybrid nanofluid (EG plus MgO plus MWCNT) flow in a microchannel with thermal radiation: An irreversibility analysis

It is very important to study these flows because they are found in the cooling units for micro-electronic devices, MHD micropumps, and fuel cells, among other microscale electromechanical units. Researchers have found that hybrid nanofluids, which are made up of two or more different nanoparticles mixed in with a base fluid, are much better at conducting heat than single-particle nanofluids. This improved thermal performance makes them ideal candidates for various applications where efficient heat transfer is crucial, such as automotive cooling systems and solar thermal collectors. The aim of the present study is to investigate the effects of quadratic mixed convection, nanoparticle volume fraction, heat source, thermal radiation, and activation energy on the heat and mass transfer characteristics of a hybrid nanofluid (EG+MgO+MWCNT) flow through a microchannel under steady-state conditions. This paper also includes an analysis of irreversibility. The equations which governs the problem are turned into a system, and it has been unraveled by means of the bvp4c solver. Multiple linear regression is used to explain the rate of heat transfer and other physical factors near both plates. It is noticed that, when the heat source parameter (Hs) is set to 0 <= Hs <= 0.6, the Nusselt number drops by 0.61559 near the left plate. It is detected that, when activation energy parameter (Eg) is set to 0 <= Eg <= 0.6, at a rate of 0.267838, the mass transfer rate goes up near the right plate. It is observed that as the Brinkmann number and the heat source parameter increases, so does the rate of entropy production. The Bejan number seems to be decreased as the same parameters increase. A value of 0.37309 is found to be the decreasing rate for the friction factor when the volume percentage of MgO (phi 1) is 0 <= phi 1 <= 0.15. Also, as Grashoff number increases, so does the fluid's velocity.