Double-layer stratification of Cross fluid flow with viscous dissipation and variable thermal conductivity

In this study, we analyse the boundary layer flow and heat transport of a two-dimensional Cross fluid model flowing over a linearly stretched sheet. The variable thermal conductivity, mass diffusivity, chemical interactions, and viscous dissipation are also used to depict intricate transport processes. To simulate realistic stratified boundary layers, double stratification is included in both the temperature and concentration fields. By using the boundary layer approximation approach, the governing partial differential equations are obtained. The transformed ordinary differential equations are calculated by using the suitable transformations. The modelled problem is graphically handled using numerical techniques (BVP4c) in MATLAB software. Graphical representations of important factors on concentration, velocity and temperature fields are illustrated. The findings show that when the thermal stratification parameter is increased, then the wall temperature declines. For the same range of variance, solutal stratification also reduces surface concentration. The power law index and Weissenberg number reduce the velocity of fluid. The Eckert number, which measures viscous dissipation, greatly increases fluid heating and thickens the thermal boundary layer. The higher inputs of chemical reaction lower the concentration region. The variable thermal conductivity enhances the temperature region, and variable mass diffusion augments the concentration profile. The arrangement of the boundary layer is significantly influenced by the combined impacts of stratification, dissipation, and varied transport characteristics. • The boundary-flows of double stratified Carreau Yasuda fluid in cylindrical coordinate system. • For large Reynolds number the basic flow may be determined numerically in terms of a similarity variable. • Resulting in enhanced heat transfer properties of the fluid