Comment on "Magnetoviscosity and relaxation in ferrofluids"
arXiv:cond-mat/0106414 · doi:10.1103/PhysRevE.64.063501
Abstract
It is shown and discussed how the conventional system of hydrodynamic equations for ferrofluids was derived. The set consists of the equation of fluid motion, the Maxwell equations, and the magnetization equation. The latter was recently revised by Felderhof [Phys. Rev. E, v.62, p.3848 (2000)]. His phenomenological magnetization equation looks rather like corresponding Shliomis' equation, but leads to wrong consequences for the dependence of ferrofluid viscosity and magnetization relaxation time on magnetic field.
6 pages, 1 figure, Submitted to Phys. Rev. E
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