Magnetohydrodynamic Peristaltic Transport in Complex Fluids

The interplay between magnetic fields and fluid motion under peristaltic forcing in channels has emerged as a focal point in the study of advanced transport phenomena. Magnetohydrodynamic peristaltic transport combines the wave-like deformation of channel walls with electromagnetic body forces to drive fluids, thereby offering precise control over flow rate, pressure gradients and heat or mass transfer. When complex fluids—ranging from nanofluids and shear-dependent non-Newtonian materials to suspensions in porous matrices—are considered, the coupling between rheology, magnetic field strength and boundary compliance gives rise to rich dynamics. These include enhanced mixing, tailored entropy generation and selective trapping of fluid pockets. Such systems hold promise for applications in targeted drug delivery, cooling of microelectronic devices and biomedical pumps, where the ability to modulate flow without moving mechanical parts is advantageous. Recent theoretical and computational advances have refined our understanding of key parameters such as the Hartmann number, thermophoretic and Brownian motion effects, and the influence of compliant walls or porous structures on transport efficiency.

Research from Nature Portfolio

A recent investigation applied an analytical perturbation technique to examine peristaltic transport of a chemically reactive nanofluid in a curved microchannel with flexible walls. By incorporating magnetohydrodynamic forces alongside thermophoretic diffusion, the study solved the governing equations under long-wavelength and low-Reynolds-number assumptions. Results demonstrate that magnetic field intensity can be tuned to manipulate velocity profiles and concentration distributions, while thermophoresis and Brownian motion jointly influence entropy generation. Graphical analyses elucidate how curvature and wall compliance enhance fluid mixing and heat transfer, suggesting design principles for microfluidic heat exchangers and drug-delivery conduits that exploit peristalsis and electromagnetism in tandem.

Magnetohydrodynamic Peristaltic Transport in Complex Fluids publication trend

The graph below shows the total number of articles in magnetohydrodynamic peristaltic transport in complex fluids across all publications each year (not limited to Nature Index journals).

Technical terms

Magnetohydrodynamics: The study of the dynamics of electrically conducting fluids under the influence of magnetic fields.

Peristaltic transport: Fluid motion induced by progressive wave-like deformations of confining boundaries.

Non-Newtonian fluid: A fluid whose viscosity varies with shear rate or shear history.

Hartmann number: A dimensionless quantity representing the ratio of electromagnetic to viscous forces in a conducting fluid.

Darcy’s law: A constitutive relation describing the flow of a fluid through a porous medium under a pressure gradient.

Thermophoresis: The movement of particles in a fluid driven by a temperature gradient.

References

1. Microbic flow analysis of nano fluid with chemical reaction in microchannel with flexural walls under the effects of thermophoretic diffusion. Scientific Reports (2024).
2. Numerical simulation for peristaltic activity of Sutterby fluid with modified Darcy’s law. Results in Physics (2017).
3. Soret and Dufour Effects on MHD Peristaltic Flow of Jeffrey Fluid in a Rotating System with Porous Medium. PLOS ONE (2016).
4. Characteristics of convective heat transfer in the MHD peristalsis of Carreau fluid with Joule heating. AIP Advances (2016).