A comparative study of three dimensional flow of Casson–Williamson nanofluids past a riga plate: Spectral quasi-linearization approach

Abstract

In the present investigation, the impact of variable transport properties on the magnetized three dimensional motion of Casson–Williamson nanofluids with nonlinear radiation influence past a Riga plate is discussed. For proper utilization of nanoliquids, a good account of distinct fluid transport variables in any flow geometry is essential. The governing flow equations of a stretching Riga plate of variable viscosity, mass diffusivity and thermal conductivity are obtained after imposing an appropriate similarity variables. The spectral quasi-linearization method (SQLM) was employed to get good account of all pertinent flow parameters. Apart from excellent agreement with earlier known work in literature, the method performance (numerical estimation tools) are discussed via CPU time, errors (L∞ and L1), and comparison with Galerkin weighted residual method. Also engineering dimensionless parameters were presented for the present problem. The results therein established that flow resistivity of Williamson fluid is higher when compared to the Casson fluid. In addition, Casson fluid diffuses and conduct lesser in respect to Williamson fluid. With opposing characterization of viscosity parameter, variable thermal conductivity and mass diffusivity enhances the species and thermal boundary layer, while the viscosity property appreciated the momentum(s) profiles. This study is found applicable while forecasting the right fluid rheology to use, proffer solution to noise/turbulence effect, to safeguard boundary layer isolation, and establishing a force parallel to the surface for both industrial, engineering and biomedical use.