Viscosity of Magnetic Fluid in Oscillation System in a Strong Magnetic Field

21st Winter School on Continuous Media Mechanics

计算机技术

Polunin, V.M.^1 ; Ryapolov, P.A.^1 ; Zhakin, A.I.^1 ; Shel'deshova, E.V.^1

South-West State University, Kursk, Russia^1

关键词: Comparative analysis;    Dynamic elasticity;    Magnetization curves;    Oscillation system;    Static elasticity;    Strong magnetic fields;    Theoretical approach;    Transverse magnetic field;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/581/1/012017/pdf
DOI  :  10.1088/1757-899X/581/1/012017

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The article gives an assessment of viscosity and its increment ('magnetoviscous' effect) in a thin near-wall layer of the column of magnetic fluid that oscillates in the tube when applying a strong transverse magnetic field. Viscosity is calculated according to a formula derived from two different theoretical approaches. For calculation, previously published experimental results, which were discussed earlier on the assumption that there is no field dependence of viscosity, are used in the article. A comparative analysis of the "near-wall viscosity" estimates obtained using dynamic elasticity as well as the magnetization curve and the coefficient of static elasticity is carried out. The significance of the results obtained for 'magnetoviscous' effect for performing diagnosis of interparticle aggregation is indicated.