Numerical and analytical models in electrohydrodynamics and microfluidics

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In many industrial and research processes there is an interaction between an electric field and flow of fluids or gases. Among others this happens in all applications involving small particles, for example in electrostatic precipitators used in environmental protection. A phenomenon called the electric corona discharge is typically generated to electrically charge the particles, so that electric forces can be used to control the particle's motion. The electric corona discharge is a complex physical process relying on avalanche ionization of the gas molecules, but it also results in motion of the ambient gas, called the secondary electrohydrodynamic flow, or ionic wind. This flow can be sometimes beneficial, but is often a nuisance disturbing the intended functioning of a device. In both cases numerical simulation can be helpful in garnering better understanding of these complex phenomena, and the design and optimization of electrostatic devices.