Hey Ray! Visualizing The Coanda Effect

PITTSBURGH (KDKA) — Have you ever poured something from one cup into another only to have the liquid seemingly stick to the side, making a big mess?You have some pretty cool science to blame for that!
(Photo Credit: Ray Petelin)
Moving fluids have a tendency to stay attached to curved surfaces. This is called the Coanda Effect. You can see that the cup’s lip is curved enough to allow the Coanda Effect to work. On the other hand, if the cup or container’s lip is sharp, the water