Revolutionizing thermal systems: a Cattaneo–Christov heat flux-based micropolar hybrid nanofluid flow with slip and dissipation effects on buoyancy-driven expanding surface

The ongoing work explores the thermal attributes of a polar hybrid nanofluid containing CdTe and ZnO nanoparticles dispersed in water through a surface undergoing expansion packed within a porous matrix. The inclusion of magnetization in conjunction with radiation enriches the flow phenomena. Additionally, it is unusual to neglect the role of dissipative heat energy; therefore, both the viscous, Joule and Darcy dissipation enrich the thermal properties. The innovative aspect of this study lies in incorporating Cattaneo–Christov thermal relaxation for energy transport, with velocity slip influencing the overall analysis. Dissipative heat along with thermal radiation significantly enhances energy transport, which improves heat dissipation in photothermal therapy. The developed mathematical framework is nondimensionalized to enable the implementation of suitable similarity transformations. Moreover, the transport processes are examined computationally through the “homotopy analysis method (HAM)”, The validation with the traditional fluid in a particular case is observed and deployed.