Thermal analysis for heat transfer enhancement in electroosmosis-modulated peristaltic transport of Sutterby nanofluids in a microfluidic vessel

摘要

A theoretical study is conducted for magnetohydrodynamic pumping of electroosmotic non-Newtonian physiological nanoliquids through a two-dimensional microfluidic channel. The Sutterby rheological nanofluid model is utilized to characterize the liquid. The normalized two-dimensional conservation equations for mass, longitudinal and transverse momentum, energy and solutal concentration are reduced with lubrication approximations (long wavelength and low Reynolds number assumptions). A coordinate transformation is employed to map the unsteady problem from the wave laboratory frame to a steady problem in the wave frame. Slip and convective conditions are imposed at the channel walls. The emerging boundary value problem is solved numerically using MATLAB software. The flow is effectively controlled by many geometric parameters, viz., electroosmosis, Hartmann and Sutterby fluid parameters. It is observed from the analysis that the rise in magnetic and electroosmosis effects leads to a reduction in the axial velocity field. The radiation parameter decreases the temperature for the positive value of Joule heating parameter and the trend is revered for the negative Joule heating parameter. This study is encouraged by exploring the nanofluid dynamics in peristaltic transport as symbolized by heat transport in biological flows, novel pharmacodynamics pumps and gastrointestinal motility enhancement. The study is also relevant to MHD biomimetic blood pumps.