Nanosecond Pulsed Imaging for Ethanole Electrospraying Breakup in a Modified Nozzle

An electrified liquid jet breakup behavior and modes of disintegration indifferent ow rates and applied voltages are investigated. The present phenomenology belongs to a new injector introduced recently by Morad et al. (2016). This injector is shown to highly extend the stability and ow rate of electrospray particularly in the Taylor cone-jet mode. The experimental investigation is performed using a high-power light-emitting diode (LED) illumination as the light source. The light source is developed to operate in the pulsing condition when synchronized with a digital camera, and is particularly designed to function properly in presence of high electromagnetic interference (EMI). Details of the light source development is presented with the captured images from the jet breakup at different modes. The operational map of the new injector is obtained, and the physical mechanisms of different behaviors are explained and discussed.