Effect of EM propagation medium on electrorheological characteristics of dielectric nanofluids. Issue 4 (3rd April 2017)

• Record Type: Journal Article
• Authors: Adil, Muhammad; Mohd Zaid, Hasnah; Chuan, Lee Kean; Ahmad Latiff, Noor Rasyada
• Is Part Of: Journal of dispersion science and technology. Volume 38:Issue 4(2017)
• Page Start: 570
• Page End: 576
• Publication Date: 2017-04-03
• Subjects: Dielectric loss -- electromagnetics -- electrorheological effect -- nanofluids -- propagation medium -- pseudo-plastic; Emulsions -- Periodicals; Suspensions (Chemistry) -- Periodicals; Emulsions; Suspensions; 541.34
• DOI: 10.1080/01932691.2016.1182922
• Languages: English
• ISSNs: 0193-2691

Abstract

ABSTRACT: The effect of dielectric loss on the electrorheological (ER) characteristic of dielectric nanofluids under shear was studied. When nanofluids are activated by an applied electric field, it behaves like a non-Newtonian fluid under ER effect by creating the chains of nanoparticles. ER characteristics of ZnO and Al2 O3 nanofluids with various nanoparticles concentration (0.1, 0.05, 0.01 wt%) were measured. For this purpose, a solenoid-based electromagnetic (EM) transmitter was used under different propagation media including air, tap water, and salt water. The result shows that all the nanofluids exhibit pseudo-plastic behavior, while the electric field causes a significant increase in viscosity in the presence of tap water, followed by salt water. Additionally, the viscosity of nanofluid shows a high dependence on particle loading. A possible mechanism was also proposed to describe the effect of dielectric properties on the ER behavior of dielectric nanofluids. GRAPHICAL ABSTRACT: