Bioconvective treatment for the reactive Casson hybrid nanofluid flow past an exponentially stretching sheet with Ohmic heating and mixed convection

Maintaining continuous thermal propagation is essential in many industrial and thermal systems because it helps improve the efficiency of thermal engineering engines and machines. Thus, the hybridization of magnetized nanoparticles in a heat-supporting non-Newtonian fluid is a good platform to enhance thermal power energy. As such, this study focuses on the bioconvective treatment for the reactive Casson hybrid nanofluid flow past an exponentially stretching sheet with Ohmic heating and mixed convection. The hybridization process considers Au (Gold) and Ag (Silver) nanoparticles in water base liquid. A partial derivative model is developed for the hybrid volume fraction, which is simplified to a dimensionless ordinary derivative model. A semi-analytical Chebyshev collocation scheme (CCS) is used to provide solutions to the transformed model. The physical impacts of the fluid parameters on the momentum, heat distribution, reacting species field and microbial species are illustrated in graphs for both Ag and Au nanoparticles. A limited case of the present work is compared with the earlier studies to validate our results. The results show that the velocity of mono/hybrid nanofluids upsurges with rising values of the mixed convection term. The bioconvective Schmidt number declines the motile microorganism profiles. The higher velocities, temperatures and concentrations are recorded for hybrid (Ag-Au/water) nanofluid, followed by unitary Au-water and Ag-water nanofluids separately.

Automated summary

The hybridization of magnetized nanoparticles in a heat-supporting non-Newtonian fluid is studied to enhance thermal power energy. The effects of fluid parameters on momentum, heat distribution, reacting species field, and microbial species are investigated for Ag and Au nanoparticles. The results show that the hybrid nanofluid has higher velocity, temperature, and concentration compared to the unitary Au-water and Ag-water nanofluids.