Macroscopic two-fluid effects in magnetorheological fluids

Pleiner, Harald (author), Svenšek, Daniel (author), Potisk, Tilen (author), Brand, Helmut R. (author)

We investigate macroscopic two-fluid effects in magnetorheological fluids generalizing a one-fluid model studied before. In the bulk of the paper we use a model in which the carrier fluid, with density ρ1, moves with velocity v1, while the magnetic component (density ρ2) and, therefore, the magnetization and the magneticfield-induced relaxing strain field move with velocity v2. In the framework of macroscopic dynamics we find, in particular, reversible dynamic and dissipative cross-coupling terms between the magnetization and the velocity difference. Experiments to detect some of these cross-coupling terms are suggested. We also compare the results of the two-fluid model presented here with two-fluid models available for electrorheological fluids. In two appendices we discuss the simplifying assumptions made to arrive at the model used in this paper and we also outline how to detect potential deviations from this model.

• Language: English
• Keywords: fluid dynamics, rheology, magnetorheological fluids
• Typology: 1.01 - Original Scientific Article
• Organization: FMF - Faculty of Mathematics and Physics
• Year: 2020
• Number of pages: Str. 032601-1-032601-13
• Numbering: Vol. 101, iss. 3
• PID: 20.500.12556/RUL-114956
• UDC: 532.135
• ISSN on article: 2470-0045
• DOI: 10.1103/PhysRevE.101.032601
• COBISS.SI-ID: 3412068
• Publication date in RUL: 02.04.2020

Record is a part of a journal

• Title: Physical review
• Shortened title: Phys. rev., E
• Publisher: American Physical Society
• ISSN: 2470-0045
• COBISS.SI-ID: 2048366611

Secondary language

• Language: Slovenian
• Keywords: dinamika tekočin, reologija, magnetoreološke tekočine