Radiation and joule heating effects on electroosmosis-modulated peristaltic flow of Prandtl nanofluid via tapered channel

In this paper, a generalized Newtonian nanofluid in a bio-microfluidics channel due to combined effects of peristalsis and external applied electric field in the presence of thermal radiation and Joule heating is considered. The Poisson and Nernst-Planck equations are taken into account. The obtained non-linear coupled ordinary differential equations are simulated numerically. The impacts of several parameters under the applied electric field on velocity, temperature, concentration, trapping isothermal lines, Nusselt, and Sherwood numbers are presented graphically. It is observed that the number of isothermal lines increases with the electro-osmotic parameter thermophoresis parameter and Brownian motion parameter while perter out with thermal radiation. The results are helpful to design the micro pumps/chips used in medical engineering and improved the thermal efficiency and the durability of microchip cooling devices.

Automated summary

This paper investigates a generalized Newtonian nanofluid in a bio-microfluidics channel under the combined effects of peristalsis and an external applied electric field, considering thermal radiation and Joule heating. Non-linear coupled ordinary differential equations are numerically simulated, showing the impacts of various parameters on velocity, temperature, concentration, and heat and mass transfer. The results are beneficial for designing micro pumps/chips in medical engineering and enhancing the thermal efficiency and durability of microchip cooling devices.