Thermodynamic properties of Casson-Sutterby-micropolar fluid flow over exponential stretching curved sheet with impact of MHD and heat generation

Abstract

The study focuses on the dynamic properties of models describing the flow of couples' micropolar-Casson-Sutterby fluids over an exponentially curved sheet. The study takes into account a low Reynolds number, magnetic field effects, and chemical reactions. By employing boundary layer approximations, the governing general equations are reduced to partial differential equations. Subsequent appropriate transformations simplify the motion, micropolar, and energy equations into a set of coupled nonlinear ordinary differential equations, which can be numerically elucidated using the bvp4c function in MATLAB. The study reveals that as the material constants approach zero, the flow of micropolar fluids becomes Newtonian fluids. The fluid velocity gradually increases due to the enhancement in the Sutterby fluid factor, leading to heightened fluid shear thinning and increased fluid velocity. The results can be analyzed numerically and graphically and are accompanied by a physical explanation of various parameters. The velocity exhibited a declining trend due to an increase in the Casson fluid factor. This was caused by the enrichment of fluid viscosity with higher values of the custom fluid factor, ultimately resulting in a reduction in the fluid velocity. Increasing the values of the micropolar fluid factor resulted in diminishing velocity curves.

Keywords

• Micropolar fluid
• Casson fluid
• Sutterby fluid
• Exponential curved sheet
• Numerical analysis