The world, especially the internet, abounds with incorrect or misleading descriptions of how fluid mechanical systems work, many of which are repeated over and over again. These topics are often “controversial” to the lay audience, although there rarely is any disagreement between fluid mechanicians about these things. This category is for resolving questions where multiple sources disagree or where the purported explanations come from an unreliable source.
Some examples of the sorts of questions that are appropriate here are things like
- how does an aircraft fly
- does a Tesla valve really work
- why does the shower curtain always blow in toward your body
- why does a ping pong ball float stably above a hair dryer