Figure 1
From: Electrokinetic instability in microchannel ferrofluid/water co-flows
Electric field effect on the interfacial behavior of the ferrofluid (0.2× EMG 408) and water co-flow in a 45 μm deep T-shaped microchannel: (a) experimental images (dark for ferrofluid and white for water); (b) predicted ferrofluid concentration fields (red for ferrofluid and blue for water) from the depth-averaged numerical model; (c) predicted ferrofluid concentration fields from a regular 2D model. The experimental and numerical images are each obtained at 20 s after the corresponding DC electric field (value being labeled on the image) is applied. Note that the regular 2D simulation in (c) is each performed at a much lower electric field than the depth-averaged simulation in (b) because, otherwise, chaotic waves occur in every case of (c).
