Effect of drop-like aggregates on the viscous stress in magnetic suspensions

•Dense drop-like aggregates determine viscosity of magnetic suspensions.•Macroscopical stress is determined by the forces, acting on the drop surface.•When the Mason number is not small, the power law for the rheogram is not fulfilled.

We present results of theoretical and experimental study of effect of dense drop-like aggregates on the magnetoviscous effects in suspensions of non-Brownian magnetizable particles. Unlike the previous works on this subject, we do not restrict ourselves by the limiting case of highly elongated drops. This allows us to reproduce the experimental rheological curve in wide region of the shear rate of the suspension flow.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide