Bioconvective peristaltic flow of third grade nanofluid with homogeneous–heterogeneous chemical reactions and entropy generation

This study investigates the peristaltic bioconvection flow of a third-grade nanofluid in the presence of autocatalysis chemical reactions and entropy generation, employing an analytical approach through Homotopy Analysis Method (HAM). The analysis highlights the influence of key governing parameters, including the Prandtl number, Brownian diffusion, thermophoresis, and the bioconvection Rayleigh number on flow, heat and mass transport as well as gyrotactic microorganisms. The results demonstrate that autocatalysis substantially alters the concentration field, while entropy generation provides valuable insight into the competition between thermal irreversibility and viscous dissipation. Improved thermophoresis and Brownian motion parameters are shown to promote heat transfer, and the bioconvection parameter regulates microorganism distribution. The findings contribute to an understanding of transport processes in complex non-Newtonian fluid systems.