Electromagnetohydrodynamic effects with single-walled carbon nanotubes particles in a corrugated microchannel

Abstract

Single-walled carbon nanotubes (SWCNTs) are an advanced product of nanotechnology with notable mechanical and physical properties. This motivated us to investigate the effect of electromagnetic hydrodynamic (EMHD) flow on SWCNTs suspended in a microchannel with corrugated walls. The corrugation of the wavy walls is described by periodic sinusoidal waves of small amplitudes ε, either in phase or out of phase. The problem simulated with a system of governing equations, such as potential, momentum, and heat equations, which were solved analytically using the perturbation method. The behavior of nanofluid velocity, temperature, volumetric flow rate, and average velocity was investigated using three models of thermal characteristics. The results confirm that, the addition of SWCNTs, reduces the fluid velocity at the center of the channel by providing resistance to the fluid motion. The concentration ϕ of SWCNTs influence enhances the rate of heat transfer. Additionally, Xue's model has the highest heat transfer rate compared to Maxwell and Hamilton Crosser's (H-C) models. Finally, the obtained flow rate results were compared with previously published data and found to be in good agreement.