Recent content by styleworker

  1. S

    Convection driven by magnetic field

    I'm studying the effect of a magnetic field on a non-conducting fluid, such as liquid oxygen or liquid hydrogen. As I know a convective flow can be driven, if the extern magnetic field is strong enough. The extern magnetic field can be uniform or nonuniform, but the effect of convection is much...
  2. S

    Why do ferrofluids move towards regions with higher magnetic field gradients?

    The mathematical solution is actually easy: div\vec{B}=0 with \vec{B}= \mu_0(\vec{M}+\vec{H}) \vec{H}=\begin{pmatrix} 0 \\ 0 \\ H_z \end{pmatrix} ,\vec{M}=\begin{pmatrix} 0 \\ 0 \\ M_z \end{pmatrix} we get \frac{dH}{dz} = -\frac{dM}{dz} But the physical explanation?!
  3. S

    Why do ferrofluids move towards regions with higher magnetic field gradients?

    Hello! I'm currently reading papers about ferrofluids and trying to understand the physics behind this topic. I do understand, that if we consider a vertikal temperature gradient, we get a antiparallel magnetization gradient. The ferrofluid with a the higher magnetization will move to the...
Back
Top