EMHD CASSON HYBRID NANOFLUID FLOW OVER AN EXPONENTIALLY ACCELERATED ROTATING POROUS SURFACE

The influence of Coriolis body force, electromagnetohydrodynamics (EMHD), and thermal radiative heat transfer on the Casson hybrid mixed convection nanofluid driven by an exponentially accelerated plate adjacent to a porous medium in a rotating system is analyzed. Hybrid (Ag-Al2O3) and Al2O3 nanofluids are considered with ethylene glycol (EG) base fluid. The Maxwell-Garnett model has been deployed to derive the thermal conductivity of the hybrid nanofluid. The electrical potential problem is simplified by applying Debye-Huckel linearization. The Laplace transform method (LTM) is employed to derive closed-form solutions. In terms of heat transfer, the hybrid nanofluid (Ag-Al2O3)/EG and nanofluid (Al2O3)/EG performances are compared. The present analysis shows that boosting the Taylor number reduces both hybrid (Ag-Al2O3) and Al2O3 nanofluids' velocity values; however, the unitary nanofluid achieves better acceleration than the hybrid nanofluid. The benefits of EG-based hybrid nanofluid (Ag-Al2O3) relative to EG based (Al2O3) nanofluid are elaborated. The analysis finds applications in centrifugal dynamic electrochromatog-raphy under electromagnetic gradient, bioanalytical separation techniques with electric field gradients, and rotary bio-inspired DC electromagnetic blood pumps.

Automated summary

The influence of various forces on the mixed convection behavior and heat transfer of nanofluids in a rotating system is analyzed. The results show that different forces have different effects on nanofluid velocity and acceleration, and the performance of different nanofluids is compared.