Prevalence of secondary flow due to hall currents on radiative squeezing flow of a CuO-water nanofluid in a rotating channel: numerical prediction

Abstract

The current study describes three-dimensional incompressible mixed convection flow with convective heat and mass transport on squeezing nanofluid from a rotating channel under impact of Hall current, heat source and Soret number. The current flow model is formulated to consider water based nanofluids with nanoparticle CuO (Copper Oxide). Effectively a nanoscale formulation with the Tiwari-Das model deployed to study material properties. The basic flow equations rendered to non-dimensional form via similarity transformation for which numerical simulations utilizing the fourth-fifth order Runge-Kutta-Fehlberg scheme with the help of Maple, it is a simple iteration scheme that does not require any evaluation of perturbation and linearization for solving non-linear system of equations. Graphical results for primary velocity, secondary velocity, temperature and nanoparticle concentration distributions are presented for different controlled parameters. Furthermore, computed numerical results for skin friction, Nusselt number and Sherwood number for different emerging parameters are tabulated and discussed in detail. The results are verified for limiting cases by comparing with various investigators and found to be in excellent agreement. Outcomes reveal that decrease in secondary flow to a rising channel rotating term and Hall current term. Squeezing term improved the flow rate motion, but reduces nanoparticle conductivity and species diffusion. Thermo-diffusion term stimulated the CuO nanofluid reaction. The authors have hope that the results obtained in the present study not only provide useful information for applications, it also serves as a complement to the previous studies.