Figure 3
From: On the ridge of instability in ferrofluidic Couette flow via alternating magnetic field

Mode amplitudes \(|u_{0,1}|\) of (dominant) radial flow field amplitudes of TVF at mid gap versus Reynolds number Re. The inset shows the same but using the relative distance \(\mu = Re(s_{z,S})/Re^0_c-1\), of the Reynolds number Re from the respective onset with different modulation amplitudes \(s_{z,M}\) in the magnetic fields as indicated.