Cellulose Movement Characteristics in Circulated Synthetic Ester Oil-Based Nanofluids Under AC Voltage

This study investigates the impact of the cellulose movement characteristics on the dielectric properties of circulated synthetic ester oil-based nanofluids. Finite element method simulations are employed to analyze the accumulation and trajectory behavior of cellulose particles. The results show that TiO₂ nanoparticle addition limits particle accumulation by capturing cellulose, and the circulation velocity creates drag forces that hinder conductive bridge formation. This results in a more linear movement of cellulose particles, allowing for quicker transit through the charged region between electrodes, while nanoparticles also promote a flattener trajectory for cellulose. The experimental data validate the simulation result, revealing a linear relationship, demonstrating that the breakdown voltage diminishes as cellulose concentration rises, making it easier for the conductive bridge to form. Conversely, the introduction of nanoparticles and an increase in circulation velocity yield an opposing effect.