May 24, 2024
Shoaib Khanmohammadi

Shoaib Khanmohammadi

Academic rank: Associate professor
Address: Department of Mechanical Engineering, Kermanshah University of Technology, Kermanshah, Iran
Education: Ph.D in Mechanical Engineering
Phone: 0833-8305001
Faculty: Faculty of Engineering

Research

Title
On evaluation of magnetic field effect on the formation of nanoparticles clusters inside aqueous magnetite nanofluid: An experimental study and comprehensive modeling
Type Article
Keywords
Aqueous Nanofluid Ferrofluid Magnetic field Magnetite Viscosity Artificial Neural Network
Researchers Amin Shahsavar Goldanloo، Shoaib Khanmohammadi، Masoud Afrand، Aysan Shahsavar Goldanlou، sara rostami

Abstract

This experimental study is conducted to explore the rheological behavior of magnetite-water ferrofluid in the attendance of an external magnetic field (MF). Tetramethylammoniumhydroxide is used as surfactant to increase the stability of prepared ferrofluids. The impacts of MFstrength (0–480 G) and volumeconcentration of nanoparticles (0.3–1.5%) on the outcomes are examined. It was found that as the shear rate increases, the viscosity decreases sharply and then tends to a fixed number and therefore, the magnetite-water has non-Newtonian pseudoplastic behavior. Itwas also found that the application of the MFboth increases the viscosity and enhances the non-Newtonian behavior of the ferrofluid. Moreover, itwas found that the rise of nanoparticle concentration (φ) leads to the increase of ferrofluid viscosity. Then, the artificial neural network is applied to develop a prediction model for the rheological behavior of water- magnetite ferrofluid in both the absence and attendance of an external MF based on the obtained experimental data. The outcomes revealed that the developed models are capable of predicting the outputs in the absence and attendance of an external MF with R2 value of 0.9772 and 0.9692.