Impact of buoyancy forces and electroosmosis in a peristaltic transport of a non-Newtonian tri-hybrid nanofluid induced by an asymmetric channel

Peristaltic transport is essential in various biomedical and industrial processes involving fluid motion through flexible or asymmetric channels. Incorporating buoyancy forces and electroosmosis into the study of non-Newtonian tri-hybrid nanofluids offers new possibilities for enhancing heat and mass transfer in such systems. The purpose of this study is to analyze the effects of buoyancy forces and electroosmosis on the peristaltic transport of a non-Newtonian tri-hybrid nanofluid in an asymmetric channel. The governing equations for momentum and energy are formulated using a suitable non-Newtonian fluid model under long-wavelength and low-Reynolds-number assumptions. The Poisson–Boltzmann equation is evaluated using the Debye–Hückel approximation, and the lubrication approximation is employed to simplify the governing equations. The Chebyshev collocation technique is used to solve the problem numerically. The Poisson–Boltzmann equation is evaluated using the Debye–Hückel approximation, and the lubrication approximation is employed to simplify the governing equations. The problem is then solved using the Chebyshev collocation technique. The results indicate that an increase in the electroosmotic parameter leads to a higher fluid velocity. Additionally, the magnetic parameter exerts a damping effect on the flow, thereby reducing the overall velocity. A proportional increase in pressure rise is observed with the Helmholtz–Smoluchowski velocity parameter, which influences the transport dynamics of the fluid. These findings highlight the significant role of electroosmotic forces, magnetic fields, and peristaltic motion in optimizing the performance of ternary hybrid nanomaterials in medical applications.