Numerical simulation for steady Casson nanofluid flow over curved stretching sheet with mixed convection and viscous dissipation effects

Abstract

The steady Casson nanofluid flow over a curved stretched sheet is numerically analyzed in this work while taking viscous dissipation and mixed convection into account. Nanoparticles improve heat transport, the non-Newtonian behavior is described by the Casson model. To represent boundary-layer flow over a curved surface, a local non-similarity transformation converts the nonlinear PDEs into linked ODEs with variable coefficients. MATLAB bvp4c is used to numerically solve the resulting equations. Analysis is done on the effects of the Eckert number, mixed convection, curvature, Casson parameter, and nanoparticle volume percent. The findings indicate that while viscous dissipation and mixed convection have opposing thermal effects, curvature greatly modifies the flow. In addition to improving thermal performance, the introduction of nanoparticles increases the system’s sensitivity to buoyancy and viscosity effects. The results directly affect high-precision heat systems in polymer extrusion, microfluidics, and bioengineering applications and advance our knowledge of intricate transport processes in curved geometries.