Bubble Dynamics Visualization Using Event-based Camera Techniques

Imaging techniques are commonly used to characterize multiphase flows for a range of

applications. While non-intrusive these techniques can suffer from motion blur, limited

spatial and temporal resolution, and data bandwidth limitations. Using recent advances

in event-based cameras, we are able to capture an understanding of the flow regime

with substantially less memory storage, faster processing and a quicker understanding

of the flow patterns while still maintaining the flow unobstructed like traditional

measuring techniques. Using an adiabatic air-water multi-phase system with well

characterized flow parameters, we will demonstrate techniques gathered from using

low-cost event-based cameras and compare these results to high-speed cameras. The

advantages and disadvantages of event based camera flow visualization and analysis

will be discussed.