Unsteady squeezing Casson fluid through rotating discs under the variable magnetic field, cross diffusion and chemical reaction effects

Abstract

There are several industrial and biological applications for the study of squeezing flow, including cell squeeze technology, blood flow and food production. In particular, the load and thrust bearing qualities of human body joints and the compression molding processes of metals and polymers might be explained by this solution, which could also illustrate the classical lubrication problems. So, this work investigated the effects of cross-diffusion, an induced magnetic field and joule heating on an unsteady squeezing Casson fluid on a spinning disc. Using the proper similarity transformations, the systems of partial differential equations are drained into a system of ordinary differential equations, which are solved numerically using the finite difference method. This analysis accounts for the effects of biophysical parameters on velocity components, magnetic fields, heat and mass transfer profiles. Additionally, graphic representations are provided for the skin friction coefficient, Nusselt number and Sherwood number for various values of the governing parameters. The current investigation has been matched with published results in order to validate validity, and good agreements have been seen. The impacts of the problem parameters under consideration are also explained numerically and graphically. The top disc’s rate of rotation is found to enhance the tangential fluid flow and temperature distribution, while it reduces velocity in the other directions and the induced magnetic field.