Internal friction-induced heat generation in magnetorheological fluids under shear mode
Year: 2025
Type: article
Abstract: Magnetorheological fluids (MRFs) can be freely transformed between solid and liquid with the regulation of the magnetic field, resulting in many smart applications, i.e., dampers for automobile. However, the inevitably generated heat during operation seriously affects the performance. To investigate the mechanism and influencing factors, microscopic numerical simulations are performed and an internal frictional heat generation model is developed. The heat generation is mainly due to the internal friction, including the friction between magnetic particles themselves and between particles and drive walls. The heat generation power is positively correlated with magnetic field strength, particle volume fraction, and shear rate, while negatively correlated with particle size. Moreover, the addition of magnetic nanoparticles can significantly inhibit heat generation.
Source: Physics of Fluids
DOI: 10.1063/5.0259443
Institutions: Yanshan University, Zhengzhou University, Tsinghua University
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4408190079