EHD-MGC-media

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17/3/18: Seminario...

Keywords:

CO2 capture, Ca-based synthetic materials, fine cohesive powders, Ac electrokinetics, corona discharge, AC electric-field-induced, fine aluminum powders, Electrohydrodynamics, dielectrophoresis, dielectric liquid, axial electric-fields, Flow regimes, fine cohesive powders, nonuniform ac electric fields, electrolytes, microelectrodes, Jamming threshold, capillary jets, Normal-mode, Numerical modelling, electro-thermo-convection, dielectric liquid layer, Trichel pulses, thermal-gradient, instability, Plasma chemical, negative DC corona, charge diffusion, finite-amplitude electroconvection, Self-diffusion, gas-fluidized bed

EHD in Microfluidics:

Controlled rupture of jets:

Obtaining an isolated drop in the intact length of the jet by means of pressure pulses, we see as the position of appearance of the first drop and the second is considerable.

EHD flows and instabilities in low conductive liquids:

Experiments Liquid bridges.

Models Liquid bridges.

Drop with applied electric field.

Drop without electric field applied.

Rosette instability. Rosette instability in castor oil. The instability is produced by a corona discharge (11 kV) on a layer of liquid.

Surface Instability in EHD.

Volume instability in EHD.

Electrohydrodynamic crest.

Residence time of the charges injected into a convection cell produced by unipolar injection. The horizontal axis is the injection position, the vertical axis the moment of injection. The speed of the cell oscillates sinusoidamente in the time. The diagram shows sensitivity to the initial conditions, which causes a chaotic distribution of charge in the volume of the liquid.

Bifurcation diagram of a conductive ball that bounces on an electrode subjected to a constant field superimposed on a field that varies sinusoidally in time. The horizontal axis is the frequency of the applied field, the vertical axis the amplitude. The colors represent: blue, period 1; green, period 2; Magenta, period 4; yellow, period 3; red, chaos; turquoise, quasiperiodic.

Physics and chemistry of electric discharges in gases :

Light emitted by a dielectric barrier discharge in CO2, for an AC voltage of 24 kV peak-peak and frequency of 500 Hz.

Physics of granular media

A particle of the cohesive granular medium (developer).

The rotating drum with the toner.

Media