Kieran Coffey
Research Mentor: Solomon Adera
Mentor Department: MechE, Engineering
Author(s): Not Available
Session: Session 7 (4:00 PM – 4:50 PM)
Presentation Type: Poster 67
Abstract
Droplets are observed and in machinery we interact with on a daily basis. From raindrops to printers, to coughing and sneezing, droplets are everywhere. By studying droplets, their behavior can be better understood and predicted to obtain desired outcomes. For example, theme park rides can maximise the area water splashes into to maximise how wet riders get. Specifically, this study aims to locate the critical height where a droplet splashes (breaks into satellite droplets), based on the fluid and surface characteristics. To obtain the height, 100µL of DI water was dropped from a pipette at a range of heights, onto a surface coated with _, with _ pillars at a density of _. At each height, 7 trials were completed. For each trial, a splash was defined as satellite droplets being produced. If =70% of the trials at a specific height resulted in a splash, the water was said to splash at that height. The critical height was found by an iterative narrowing the highest non-splashing height and the lowest splashing height until convergence.
