Convective micropolar fluid over inclined surface with thermal radiation and velocity slip condition effects: Duality and stability

This research examines the flow of 2D micropolar fluid across an inclined linear shrinking/stretching surface with suction, convective, slip and thermal radiation impact. The governing partial differential equations (PDEs) are transformed into an ordinary differential equations (ODEs) system using a linear similarity transformation, and the bvp4c technique is then used to solve the ODEs system in MATLAB. Comparisons of both solutions are presented. The effects of regulating flow parameters on dimensionless temperature profiles, angular velocity, velocity, skin friction, wall couple stress and heat transfer are shown graphically. Stable velocity profiles are inversely related to velocity slip and material parameter. For a given suction and stretching/shrinking parameter value, graphs show double solutions. The couple stress and skin friction in the first solution, drop then increase as the material parameter K increases. Critical points of the stretching/shrinking parameter, ?(ci)=? where both solutions occur, are indicated by the symbols ?(ci) (i.e., i=1,2,3), and that there is no solution when ?(ci)>?. A table summarizes the stability study's results and highlights.