Session: Flow Visualization and Regular Poster Session

Paper Number: 170512

170512 - Can You See the Plasma 

Abstract: 

The following is a compilation of short videos and still images taken throughout the last year while applying different experimental techniques for imaging plasma/droplet interactions. These techniques include color videography and photography, grayscale high-speed imaging, infrared thermal imaging, Schlieren, and shadowgraph. In some instances, flows visualization was enhanced digitally by applying imaging filters or physically by the adding tracer particles and using laser illumination of the gas or liquid phases. To clearly capture the desired phenomena under study, and to generate stunning images, the experimentalist must consider factors such as illumination, depth of focus, exposure time, and picture composition.

The experimental setups on which these images were taken were 2- and 3-electrode configurations of DBD surface plasma actuators, volume plasmas, and pin electrode to liquid surface discharges. Besides imaging the plasma itself some of the physical phenomena that have been recorded for their study are droplet spreading and migration on an actuator, disturbance of the induced ionic wind, droplet evaporation, fingering instability, droplet deformation and breakup, wake flows, heat transfer, turbulent flows, and phase-changes.

The video compilation takes its name from the piece of music that accompanies it, which served as the soundtrack to the 2023 movie Oppenheimer. Both the music and the videos display intricate arrangements of ever-changing tones and rhythms. The selected format is intended to showcase the immense potential of this field of study and the complexities that it entails.

Presenting Author: Yang Liu The City College of New York

Presenting Author Biography: